Liturgical CalendarLiturgical Calendar API

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Liturgical Calendar is a simple tool for getting the dates of the Liturgical Calendar. It returns the dates of the Liturgical Calendar for a given year.

The Liturgical Calendar API provides reliable and fast access to liturgical calendar data through a simple REST interface. Built for developers who need consistent, high-quality results with minimal setup time.

To use Liturgical Calendar, you need an API key. You can get one by creating a free account and visiting your dashboard.

GET Endpoint

URL
https://api.apiverve.com/v1/liturgicalcalendar

Code Examples

Here are examples of how to call the Liturgical Calendar API in different programming languages:

cURL Request
curl -X GET \
  "https://api.apiverve.com/v1/liturgicalcalendar" \
  -H "X-API-Key: your_api_key_here"
JavaScript (Fetch API)
const response = await fetch('https://api.apiverve.com/v1/liturgicalcalendar', {
  method: 'GET',
  headers: {
    'X-API-Key': 'your_api_key_here',
    'Content-Type': 'application/json'
  }
});

const data = await response.json();
console.log(data);
Python (Requests)
import requests

headers = {
    'X-API-Key': 'your_api_key_here',
    'Content-Type': 'application/json'
}

response = requests.get('https://api.apiverve.com/v1/liturgicalcalendar', headers=headers)

data = response.json()
print(data)
Node.js (Native HTTPS)
const https = require('https');
const url = require('url');

const options = {
  method: 'GET',
  headers: {
    'X-API-Key': 'your_api_key_here',
    'Content-Type': 'application/json'
  }
};

const req = https.request('https://api.apiverve.com/v1/liturgicalcalendar', options, (res) => {
  let data = '';
  res.on('data', (chunk) => data += chunk);
  res.on('end', () => console.log(JSON.parse(data)));
});

req.end();
PHP (cURL)
<?php

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://api.apiverve.com/v1/liturgicalcalendar');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'X-API-Key: your_api_key_here',
    'Content-Type: application/json'
]);

$response = curl_exec($ch);
curl_close($ch);

$data = json_decode($response, true);
print_r($data);

?>
Go (net/http)
package main

import (
    "fmt"
    "io"
    "net/http"

)

func main() {
    req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/liturgicalcalendar", nil)

    req.Header.Set("X-API-Key", "your_api_key_here")
    req.Header.Set("Content-Type", "application/json")

    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()

    body, _ := io.ReadAll(resp.Body)
    fmt.Println(string(body))
}
Ruby (Net::HTTP)
require 'net/http'
require 'json'

uri = URI('https://api.apiverve.com/v1/liturgicalcalendar')
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true

request = Net::HTTP::Get.new(uri)
request['X-API-Key'] = 'your_api_key_here'
request['Content-Type'] = 'application/json'

response = http.request(request)
puts JSON.pretty_generate(JSON.parse(response.body))
C# (HttpClient)
using System;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        using var client = new HttpClient();
        client.DefaultRequestHeaders.Add("X-API-Key", "your_api_key_here");

        var response = await client.GetAsync("https://api.apiverve.com/v1/liturgicalcalendar");
        response.EnsureSuccessStatusCode();

        var responseBody = await response.Content.ReadAsStringAsync();
        Console.WriteLine(responseBody);
    }
}

Authentication

The Liturgical Calendar API requires authentication via API key. Include your API key in the request header:

Required Header
X-API-Key: your_api_key_here

Interactive API Playground

Test the Liturgical Calendar API directly in your browser with live requests and responses.

Parameters

The following parameters are available for the Liturgical Calendar API:

Parameters marked with Premium are available exclusively on paid plans.View pricing

Get Liturgical Calendar Data

ParameterTypeRequiredDescriptionDefaultExample
monthnumberNoThe two digit month you want to get the Liturgical Calendar data for (default: current month)-02
yearPremiumnumberNoThe 4 digit year you want to get the Liturgical Calendar data for (default: current year)-2025

Response

The Liturgical Calendar API returns responses in JSON, XML, YAML, and CSV formats:

Example Responses

JSON Response
200 OK
{
  "status": "ok",
  "error": null,
  "data": {
    "2025-12-01": [
      {
        "id": "advent_1_monday",
        "date": "2025-12-01",
        "dateDef": {
          "dateFn": "unprivilegedWeekdayOfAdvent",
          "dateArgs": [
            1,
            1
          ],
          "yearOffset": 0
        },
        "dateExceptions": [],
        "alternativeTransferDateDefs": [],
        "precedence": "WEEKDAY_13",
        "rank": "WEEKDAY",
        "allowSimilarRankItems": false,
        "isHolyDayOfObligation": false,
        "isOptional": false,
        "i18nDef": [
          "seasons:advent.weekday",
          {
            "week": 1,
            "dow": 1
          }
        ],
        "seasons": [
          "ADVENT"
        ],
        "periods": [],
        "colors": [
          "PURPLE"
        ],
        "commonsDef": [],
        "martyrology": [],
        "titles": [],
        "calendar": {
          "weekOfSeason": 1,
          "dayOfSeason": 2,
          "dayOfWeek": 1,
          "nthDayOfWeekInMonth": 1,
          "startOfSeason": "2025-11-30",
          "endOfSeason": "2025-12-24",
          "startOfLiturgicalYear": "2025-11-30",
          "endOfLiturgicalYear": "2026-11-28",
          "seasons": [
            "ADVENT"
          ]
        },
        "cycles": {
          "properCycle": "PROPER_OF_TIME",
          "sundayCycle": "YEAR_A",
          "weekdayCycle": "YEAR_2",
          "psalterWeek": "WEEK_1"
        },
        "fromCalendarId": "ProperOfTime",
        "fromExtendedCalendars": []
      }
    ],
    "2025-12-02": [
      {
        "id": "advent_1_tuesday",
        "date": "2025-12-02",
        "dateDef": {
          "dateFn": "unprivilegedWeekdayOfAdvent",
          "dateArgs": [
            2,
            1
          ],
          "yearOffset": 0
        },
        "dateExceptions": [],
        "alternativeTransferDateDefs": [],
        "precedence": "WEEKDAY_13",
        "rank": "WEEKDAY",
        "allowSimilarRankItems": false,
        "isHolyDayOfObligation": false,
        "isOptional": false,
        "i18nDef": [
          "seasons:advent.weekday",
          {
            "week": 1,
            "dow": 2
          }
        ],
        "seasons": [
          "ADVENT"
        ],
        "periods": [],
        "colors": [
          "PURPLE"
        ],
        "commonsDef": [],
        "martyrology": [],
        "titles": [],
        "calendar": {
          "weekOfSeason": 1,
          "dayOfSeason": 3,
          "dayOfWeek": 2,
          "nthDayOfWeekInMonth": 1,
          "startOfSeason": "2025-11-30",
          "endOfSeason": "2025-12-24",
          "startOfLiturgicalYear": "2025-11-30",
          "endOfLiturgicalYear": "2026-11-28",
          "seasons": [
            "ADVENT"
          ]
        },
        "cycles": {
          "properCycle": "PROPER_OF_TIME",
          "sundayCycle": "YEAR_A",
          "weekdayCycle": "YEAR_2",
          "psalterWeek": "WEEK_1"
        },
        "fromCalendarId": "ProperOfTime",
        "fromExtendedCalendars": []
      }
    ],
    "2025-12-03": [
      {
        "id": "francis_xavier_priest",
        "date": "2025-12-03",
        "dateDef": {
          "month": 12,
          "date": 3
        },
        "dateExceptions": [],
        "alternativeTransferDateDefs": [],
        "precedence": "GENERAL_MEMORIAL_10",
        "rank": "MEMORIAL",
        "allowSimilarRankItems": false,
        "isHolyDayOfObligation": false,
        "isOptional": false,
        "i18nDef": [
          "names:francis_xavier_priest"
        ],
        "seasons": [
          "ADVENT"
        ],
        "periods": [],
        "colors": [
          "WHITE"
        ],
        "commonsDef": [
          "None"
        ],
        "martyrology": [],
        "titles": [],
        "calendar": {
          "weekOfSeason": 1,
          "dayOfSeason": 4,
          "dayOfWeek": 3,
          "nthDayOfWeekInMonth": 1,
          "startOfSeason": "2025-11-30",
          "endOfSeason": "2025-12-24",
          "startOfLiturgicalYear": "2025-11-30",
          "endOfLiturgicalYear": "2026-11-28",
          "seasons": [
            "ADVENT"
          ]
        },
        "cycles": {
          "properCycle": "PROPER_OF_SAINTS",
          "sundayCycle": "YEAR_A",
          "weekdayCycle": "YEAR_2",
          "psalterWeek": "WEEK_1"
        },
        "fromCalendarId": "ma",
        "fromExtendedCalendars": [],
        "weekday": {
          "id": "advent_1_wednesday",
          "date": "2025-12-03",
          "dateDef": {
            "dateFn": "unprivilegedWeekdayOfAdvent",
            "dateArgs": [
              3,
              1
            ],
            "yearOffset": 0
          },
          "dateExceptions": [],
          "alternativeTransferDateDefs": [],
          "precedence": "WEEKDAY_13",
          "rank": "WEEKDAY",
          "allowSimilarRankItems": false,
          "isHolyDayOfObligation": false,
          "isOptional": false,
          "i18nDef": [
            "seasons:advent.weekday",
            {
              "week": 1,
              "dow": 3
            }
          ],
          "seasons": [
            "ADVENT"
          ],
          "periods": [],
          "colors": [
            "PURPLE"
          ],
          "commonsDef": [],
          "martyrology": [],
          "titles": [],
          "calendar": {
            "weekOfSeason": 1,
            "dayOfSeason": 4,
            "dayOfWeek": 3,
            "nthDayOfWeekInMonth": 1,
            "startOfSeason": "2025-11-30",
            "endOfSeason": "2025-12-24",
            "startOfLiturgicalYear": "2025-11-30",
            "endOfLiturgicalYear": "2026-11-28",
            "seasons": [
              "ADVENT"
            ]
          },
          "cycles": {
            "properCycle": "PROPER_OF_TIME",
            "sundayCycle": "YEAR_A",
            "weekdayCycle": "YEAR_2",
            "psalterWeek": "WEEK_1"
          },
          "fromCalendarId": "ProperOfTime",
          "fromExtendedCalendars": []
        }
      }
    ],
    "2025-12-04": [
      {
        "id": "advent_1_thursday",
        "date": "2025-12-04",
        "dateDef": {
          "dateFn": "unprivilegedWeekdayOfAdvent",
          "dateArgs": [
            4,
            1
          ],
          "yearOffset": 0
        },
        "dateExceptions": [],
        "alternativeTransferDateDefs": [],
        "precedence": "WEEKDAY_13",
        "rank": "WEEKDAY",
        "allowSimilarRankItems": false,
        "isHolyDayOfObligation": false,
        "isOptional": false,
        "i18nDef": [
          "seasons:advent.weekday",
          {
            "week": 1,
            "dow": 4
          }
        ],
        "seasons": [
          "ADVENT"
        ],
        "periods": [],
        "colors": [
          "PURPLE"
        ],
        "commonsDef": [],
        "martyrology": [],
        "titles": [],
        "calendar": {
          "weekOfSeason": 1,
          "dayOfSeason": 5,
          "dayOfWeek": 4,
          "nthDayOfWeekInMonth": 1,
          "startOfSeason": "2025-11-30",
          "endOfSeason": "2025-12-24",
          "startOfLiturgicalYear": "2025-11-30",
          "endOfLiturgicalYear": "2026-11-28",
          "seasons": [
            "ADVENT"
          ]
        },
        "cycles": {
          "properCycle": "PROPER_OF_TIME",
          "sundayCycle": "YEAR_A",
          "weekdayCycle": "YEAR_2",
          "psalterWeek": "WEEK_1"
        },
        "fromCalendarId": "ProperOfTime",
        "fromExtendedCalendars": []
      },
      {
        "id": "john_damascene_priest",
        "date": "2025-12-04",
        "dateDef": {
          "month": 12,
          "date": 4
        },
        "dateExceptions": [],
        "alternativeTransferDateDefs": [],
        "precedence": "OPTIONAL_MEMORIAL_12",
        "rank": "OPTIONAL_MEMORIAL",
        "allowSimilarRankItems": false,
        "isHolyDayOfObligation": false,
        "isOptional": true,
        "i18nDef": [
          "names:john_damascene_priest"
        ],
        "seasons": [
          "ADVENT"
        ],
        "periods": [],
        "colors": [
          "WHITE"
        ],
        "commonsDef": [
          "Pastors",
          "DoctorsOfTheChurch"
        ],
        "martyrology": [],
        "titles": [],
        "calendar": {
          "weekOfSeason": 1,
          "dayOfSeason": 5,
          "dayOfWeek": 4,
          "nthDayOfWeekInMonth": 1,
          "startOfSeason": "2025-11-30",
          "endOfSeason": "2025-12-24",
          "startOfLiturgicalYear": "2025-11-30",
          "endOfLiturgicalYear": "2026-11-28",
          "seasons": [
            "ADVENT"
          ]
        },
        "cycles": {
          "properCycle": "PROPER_OF_SAINTS",
          "sundayCycle": "YEAR_A",
          "weekdayCycle": "YEAR_2",
          "psalterWeek": "WEEK_1"
        },
        "fromCalendarId": "ma",
        "fromExtendedCalendars": [],
        "weekday": {
          "id": "advent_1_thursday",
          "date": "2025-12-04",
          "dateDef": {
            "dateFn": "unprivilegedWeekdayOfAdvent",
            "dateArgs": [
              4,
              1
            ],
            "yearOffset": 0
          },
          "dateExceptions": [],
          "alternativeTransferDateDefs": [],
          "precedence": "WEEKDAY_13",
          "rank": "WEEKDAY",
          "allowSimilarRankItems": false,
          "isHolyDayOfObligation": false,
          "isOptional": false,
          "i18nDef": [
            "seasons:advent.weekday",
            {
              "week": 1,
              "dow": 4
            }
          ],
          "seasons": [
            "ADVENT"
          ],
          "periods": [],
          "colors": [
            "PURPLE"
          ],
          "commonsDef": [],
          "martyrology": [],
          "titles": [],
          "calendar": {
            "weekOfSeason": 1,
            "dayOfSeason": 5,
            "dayOfWeek": 4,
            "nthDayOfWeekInMonth": 1,
            "startOfSeason": "2025-11-30",
            "endOfSeason": "2025-12-24",
            "startOfLiturgicalYear": "2025-11-30",
            "endOfLiturgicalYear": "2026-11-28",
            "seasons": [
              "ADVENT"
            ]
          },
          "cycles": {
            "properCycle": "PROPER_OF_TIME",
            "sundayCycle": "YEAR_A",
            "weekdayCycle": "YEAR_2",
            "psalterWeek": "WEEK_1"
          },
          "fromCalendarId": "ProperOfTime",
          "fromExtendedCalendars": []
        }
      }
    ],
    "2025-12-05": [
      {
        "id": "advent_1_friday",
        "date": "2025-12-05",
        "dateDef": {
          "dateFn": "unprivilegedWeekdayOfAdvent",
          "dateArgs": [
            5,
            1
          ],
          "yearOffset": 0
        },
        "dateExceptions": [],
        "alternativeTransferDateDefs": [],
        "precedence": "WEEKDAY_13",
        "rank": "WEEKDAY",
        "allowSimilarRankItems": false,
        "isHolyDayOfObligation": false,
        "isOptional": false,
        "i18nDef": [
          "seasons:advent.weekday",
          {
            "week": 1,
            "dow": 5
          }
        ],
        "seasons": [
          "ADVENT"
        ],
        "periods": [],
        "colors": [
          "PURPLE"
        ],
        "commonsDef": [],
        "martyrology": [],
        "titles": [],
        "calendar": {
          "weekOfSeason": 1,
          "dayOfSeason": 6,
          "dayOfWeek": 5,
          "nthDayOfWeekInMonth": 1,
          "startOfSeason": "2025-11-30",
          "endOfSeason": "2025-12-24",
          "startOfLiturgicalYear": "2025-11-30",
          "endOfLiturgicalYear": "2026-11-28",
          "seasons": [
            "ADVENT"
          ]
        },
        "cycles": {
          "properCycle": "PROPER_OF_TIME",
          "sundayCycle": "YEAR_A",
          "weekdayCycle": "YEAR_2",
          "psalterWeek": "WEEK_1"
        },
        "fromCalendarId": "ProperOfTime",
        "fromExtendedCalendars": []
      }
    ],
    "2025-12-06": [
      {
        "id": "advent_1_saturday",
        "date": "2025-12-06",
        "dateDef": {
          "dateFn": "unprivilegedWeekdayOfAdvent",
          "dateArgs": [
            6,
            1
          ],
          "yearOffset": 0
        },
        "dateExceptions": [],
        "alternativeTransferDateDefs": [],
        "precedence": "WEEKDAY_13",
        "rank": "WEEKDAY",
        "allowSimilarRankItems": false,
        "isHolyDayOfObligation": false,
        "isOptional": false,
        "i18nDef": [
          "seasons:advent.weekday",
          {
            "week": 1,
            "dow": 6
          }
        ],
        "seasons": [
          "ADVENT"
        ],
        "periods": [],
        "colors": [
          "PURPLE"
        ],
        "commonsDef": [],
        "martyrology": [],
        "titles": [],
        "calendar": {
          "weekOfSeason": 1,
          "dayOfSeason": 7,
          "dayOfWeek": 6,
          "nthDayOfWeekInMonth": 1,

  // ... response truncated (2990 total lines)
XML Response
200 OK
<?xml version="1.0" encoding="UTF-8"?>
<response>
  <status>ok</status>
  <error xsi:nil="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
  <data>
    <2025_12_01>
      <item>
        <id>advent_1_monday</id>
        <date>2025-12-01</date>
        <dateDef>
          <dateFn>unprivilegedWeekdayOfAdvent</dateFn>
          <dateArgs>
            <dateArg>1</dateArg>
            <dateArg>1</dateArg>
          </dateArgs>
          <yearOffset>0</yearOffset>
        </dateDef>
        <dateExceptions>
        </dateExceptions>
        <alternativeTransferDateDefs>
        </alternativeTransferDateDefs>
        <precedence>WEEKDAY_13</precedence>
        <rank>WEEKDAY</rank>
        <allowSimilarRankItems>false</allowSimilarRankItems>
        <isHolyDayOfObligation>false</isHolyDayOfObligation>
        <isOptional>false</isOptional>
        <i18nDef>
          <item>seasons:advent.weekday</item>
          <item>
            <week>1</week>
            <dow>1</dow>
          </item>
        </i18nDef>
        <seasons>
          <season>ADVENT</season>
        </seasons>
        <periods>
        </periods>
        <colors>
          <color>PURPLE</color>
        </colors>
        <commonsDef>
        </commonsDef>
        <martyrology>
        </martyrology>
        <titles>
        </titles>
        <calendar>
          <weekOfSeason>1</weekOfSeason>
          <dayOfSeason>2</dayOfSeason>
          <dayOfWeek>1</dayOfWeek>
          <nthDayOfWeekInMonth>1</nthDayOfWeekInMonth>
          <startOfSeason>2025-11-30</startOfSeason>
          <endOfSeason>2025-12-24</endOfSeason>
          <startOfLiturgicalYear>2025-11-30</startOfLiturgicalYear>
          <endOfLiturgicalYear>2026-11-28</endOfLiturgicalYear>
          <seasons>
            <season>ADVENT</season>
          </seasons>
        </calendar>
        <cycles>
          <properCycle>PROPER_OF_TIME</properCycle>
          <sundayCycle>YEAR_A</sundayCycle>
          <weekdayCycle>YEAR_2</weekdayCycle>
          <psalterWeek>WEEK_1</psalterWeek>
        </cycles>
        <fromCalendarId>ProperOfTime</fromCalendarId>
        <fromExtendedCalendars>
        </fromExtendedCalendars>
      </item>
    </2025_12_01>
    <2025_12_02>
      <item>
        <id>advent_1_tuesday</id>
        <date>2025-12-02</date>
        <dateDef>
          <dateFn>unprivilegedWeekdayOfAdvent</dateFn>
          <dateArgs>
            <dateArg>2</dateArg>
            <dateArg>1</dateArg>
          </dateArgs>
          <yearOffset>0</yearOffset>
        </dateDef>
        <dateExceptions>
        </dateExceptions>
        <alternativeTransferDateDefs>
        </alternativeTransferDateDefs>
        <precedence>WEEKDAY_13</precedence>
        <rank>WEEKDAY</rank>
        <allowSimilarRankItems>false</allowSimilarRankItems>
        <isHolyDayOfObligation>false</isHolyDayOfObligation>
        <isOptional>false</isOptional>
        <i18nDef>
          <item>seasons:advent.weekday</item>
          <item>
            <week>1</week>
            <dow>2</dow>
          </item>
        </i18nDef>
        <seasons>
          <season>ADVENT</season>
        </seasons>
        <periods>
        </periods>
        <colors>
          <color>PURPLE</color>
        </colors>
        <commonsDef>
        </commonsDef>
        <martyrology>
        </martyrology>
        <titles>
        </titles>
        <calendar>
          <weekOfSeason>1</weekOfSeason>
          <dayOfSeason>3</dayOfSeason>
          <dayOfWeek>2</dayOfWeek>
          <nthDayOfWeekInMonth>1</nthDayOfWeekInMonth>
          <startOfSeason>2025-11-30</startOfSeason>
          <endOfSeason>2025-12-24</endOfSeason>
          <startOfLiturgicalYear>2025-11-30</startOfLiturgicalYear>
          <endOfLiturgicalYear>2026-11-28</endOfLiturgicalYear>
          <seasons>
            <season>ADVENT</season>
          </seasons>
        </calendar>
        <cycles>
          <properCycle>PROPER_OF_TIME</properCycle>
          <sundayCycle>YEAR_A</sundayCycle>
          <weekdayCycle>YEAR_2</weekdayCycle>
          <psalterWeek>WEEK_1</psalterWeek>
        </cycles>
        <fromCalendarId>ProperOfTime</fromCalendarId>
        <fromExtendedCalendars>
        </fromExtendedCalendars>
      </item>
    </2025_12_02>
    <2025_12_03>
      <item>
        <id>francis_xavier_priest</id>
        <date>2025-12-03</date>
        <dateDef>
          <month>12</month>
          <date>3</date>
        </dateDef>
        <dateExceptions>
        </dateExceptions>
        <alternativeTransferDateDefs>
        </alternativeTransferDateDefs>
        <precedence>GENERAL_MEMORIAL_10</precedence>
        <rank>MEMORIAL</rank>
        <allowSimilarRankItems>false</allowSimilarRankItems>
        <isHolyDayOfObligation>false</isHolyDayOfObligation>
        <isOptional>false</isOptional>
        <i18nDef>
          <item>names:francis_xavier_priest</item>
        </i18nDef>
        <seasons>
          <season>ADVENT</season>
        </seasons>
        <periods>
        </periods>
        <colors>
          <color>WHITE</color>
        </colors>
        <commonsDef>
          <item>None</item>
        </commonsDef>
        <martyrology>
        </martyrology>
        <titles>
        </titles>
        <calendar>
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<!-- ... response truncated (3339 total lines) -->
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        calendar:
          weekOfSeason: 1
          dayOfSeason: 7
          dayOfWeek: 6
          nthDayOfWeekInMonth: 1
          startOfSeason: '2025-11-30'
          endOfSeason: '2025-12-24'
          startOfLiturgicalYear: '2025-11-30'
          endOfLiturgicalYear: '2026-11-28'
          seasons:
            - ADVENT
        cycles:
          properCycle: PROPER_OF_TIME
          sundayCycle: YEAR_A
          weekdayCycle: YEAR_2
          psalterWeek: WEEK_1
        fromCalendarId: ProperOfTime
        fromExtendedCalendars: []
  '2025-12-07':
    - id: advent_2_sunday
      date: '2025-12-07'
      dateDef:

# ... response truncated (2358 total lines)
CSV Response
200 OK
keyvalue
2025-12-01[{id:advent_1_monday,date:2025-12-01,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[1,1],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:1,dow:1}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:1,dayOfSeason:2,dayOfWeek:1,nthDayOfWeekInMonth:1,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}]
2025-12-02[{id:advent_1_tuesday,date:2025-12-02,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[2,1],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:1,dow:2}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:1,dayOfSeason:3,dayOfWeek:2,nthDayOfWeekInMonth:1,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}]
2025-12-03[{id:francis_xavier_priest,date:2025-12-03,dateDef:{month:12,date:3},dateExceptions:[],alternativeTransferDateDefs:[],precedence:GENERAL_MEMORIAL_10,rank:MEMORIAL,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[names:francis_xavier_priest],seasons:[ADVENT],periods:[],colors:[WHITE],commonsDef:[None],martyrology:[],titles:[],calendar:{weekOfSeason:1,dayOfSeason:4,dayOfWeek:3,nthDayOfWeekInMonth:1,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_SAINTS,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ma,fromExtendedCalendars:[],weekday:{id:advent_1_wednesday,date:2025-12-03,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[3,1],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:1,dow:3}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:1,dayOfSeason:4,dayOfWeek:3,nthDayOfWeekInMonth:1,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}}]
2025-12-04[{id:advent_1_thursday,date:2025-12-04,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[4,1],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:1,dow:4}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:1,dayOfSeason:5,dayOfWeek:4,nthDayOfWeekInMonth:1,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]},{id:john_damascene_priest,date:2025-12-04,dateDef:{month:12,date:4},dateExceptions:[],alternativeTransferDateDefs:[],precedence:OPTIONAL_MEMORIAL_12,rank:OPTIONAL_MEMORIAL,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:true,i18nDef:[names:john_damascene_priest],seasons:[ADVENT],periods:[],colors:[WHITE],commonsDef:[Pastors,DoctorsOfTheChurch],martyrology:[],titles:[],calendar:{weekOfSeason:1,dayOfSeason:5,dayOfWeek:4,nthDayOfWeekInMonth:1,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_SAINTS,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ma,fromExtendedCalendars:[],weekday:{id:advent_1_thursday,date:2025-12-04,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[4,1],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:1,dow:4}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:1,dayOfSeason:5,dayOfWeek:4,nthDayOfWeekInMonth:1,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}}]
2025-12-05[{id:advent_1_friday,date:2025-12-05,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[5,1],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:1,dow:5}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:1,dayOfSeason:6,dayOfWeek:5,nthDayOfWeekInMonth:1,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}]
2025-12-06[{id:advent_1_saturday,date:2025-12-06,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[6,1],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:1,dow:6}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:1,dayOfSeason:7,dayOfWeek:6,nthDayOfWeekInMonth:1,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]},{id:nicholas_of_myra_bishop,date:2025-12-06,dateDef:{month:12,date:6},dateExceptions:[],alternativeTransferDateDefs:[],precedence:OPTIONAL_MEMORIAL_12,rank:OPTIONAL_MEMORIAL,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:true,i18nDef:[names:nicholas_of_myra_bishop],seasons:[ADVENT],periods:[],colors:[WHITE],commonsDef:[Bishops],martyrology:[],titles:[],calendar:{weekOfSeason:1,dayOfSeason:7,dayOfWeek:6,nthDayOfWeekInMonth:1,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_SAINTS,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ma,fromExtendedCalendars:[],weekday:{id:advent_1_saturday,date:2025-12-06,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[6,1],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:1,dow:6}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:1,dayOfSeason:7,dayOfWeek:6,nthDayOfWeekInMonth:1,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}}]
2025-12-07[{id:advent_2_sunday,date:2025-12-07,dateDef:{dateFn:sundayOfAdvent,dateArgs:[2],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PRIVILEGED_SUNDAY_2,rank:SUNDAY,allowSimilarRankItems:false,isHolyDayOfObligation:true,isOptional:false,i18nDef:[seasons:advent.sunday,{week:2}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:8,dayOfWeek:0,nthDayOfWeekInMonth:1,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_2},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}]
2025-12-08[{id:immaculate_conception_of_the_blessed_virgin_mary,date:2025-12-08,dateDef:{dateFn:immaculateConceptionOfMary},dateExceptions:[],alternativeTransferDateDefs:[],precedence:GENERAL_SOLEMNITY_3,rank:SOLEMNITY,allowSimilarRankItems:false,isHolyDayOfObligation:true,isOptional:false,i18nDef:[names:immaculate_conception_of_the_blessed_virgin_mary],seasons:[ADVENT],periods:[],colors:[WHITE],commonsDef:[None],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:9,dayOfWeek:1,nthDayOfWeekInMonth:2,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_SAINTS,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_2},fromCalendarId:ma,fromExtendedCalendars:[]}]
2025-12-09[{id:advent_2_tuesday,date:2025-12-09,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[2,2],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:2,dow:2}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:10,dayOfWeek:2,nthDayOfWeekInMonth:2,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_2},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]},{id:juan_diego_cuauhtlatoatzin,date:2025-12-09,dateDef:{month:12,date:9},dateExceptions:[],alternativeTransferDateDefs:[],precedence:OPTIONAL_MEMORIAL_12,rank:OPTIONAL_MEMORIAL,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:true,i18nDef:[names:juan_diego_cuauhtlatoatzin],seasons:[ADVENT],periods:[],colors:[WHITE],commonsDef:[Saints],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:10,dayOfWeek:2,nthDayOfWeekInMonth:2,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_SAINTS,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_2},fromCalendarId:ma,fromExtendedCalendars:[],weekday:{id:advent_2_tuesday,date:2025-12-09,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[2,2],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:2,dow:2}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:10,dayOfWeek:2,nthDayOfWeekInMonth:2,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_2},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}}]
2025-12-10[{id:advent_2_wednesday,date:2025-12-10,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[3,2],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:2,dow:3}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:11,dayOfWeek:3,nthDayOfWeekInMonth:2,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_2},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]},{id:our_lady_of_loreto,date:2025-12-10,dateDef:{month:12,date:10},dateExceptions:[],alternativeTransferDateDefs:[],precedence:OPTIONAL_MEMORIAL_12,rank:OPTIONAL_MEMORIAL,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:true,i18nDef:[names:our_lady_of_loreto],seasons:[ADVENT],periods:[],colors:[WHITE],commonsDef:[BlessedVirginMary],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:11,dayOfWeek:3,nthDayOfWeekInMonth:2,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_SAINTS,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_2},fromCalendarId:ma,fromExtendedCalendars:[],weekday:{id:advent_2_wednesday,date:2025-12-10,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[3,2],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:2,dow:3}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:11,dayOfWeek:3,nthDayOfWeekInMonth:2,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_2},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}}]
2025-12-11[{id:advent_2_thursday,date:2025-12-11,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[4,2],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:2,dow:4}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:12,dayOfWeek:4,nthDayOfWeekInMonth:2,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_2},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]},{id:damasus_i_pope,date:2025-12-11,dateDef:{month:12,date:11},dateExceptions:[],alternativeTransferDateDefs:[],precedence:OPTIONAL_MEMORIAL_12,rank:OPTIONAL_MEMORIAL,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:true,i18nDef:[names:damasus_i_pope],seasons:[ADVENT],periods:[],colors:[WHITE],commonsDef:[PopeOrBishop],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:12,dayOfWeek:4,nthDayOfWeekInMonth:2,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_SAINTS,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_2},fromCalendarId:ma,fromExtendedCalendars:[],weekday:{id:advent_2_thursday,date:2025-12-11,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[4,2],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:2,dow:4}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:12,dayOfWeek:4,nthDayOfWeekInMonth:2,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_2},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}}]
2025-12-12[{id:advent_2_friday,date:2025-12-12,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[5,2],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:2,dow:5}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:13,dayOfWeek:5,nthDayOfWeekInMonth:2,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_2},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]},{id:our_lady_of_guadalupe,date:2025-12-12,dateDef:{month:12,date:12},dateExceptions:[],alternativeTransferDateDefs:[],precedence:OPTIONAL_MEMORIAL_12,rank:OPTIONAL_MEMORIAL,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:true,i18nDef:[names:our_lady_of_guadalupe],seasons:[ADVENT],periods:[],colors:[WHITE],commonsDef:[BlessedVirginMary],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:13,dayOfWeek:5,nthDayOfWeekInMonth:2,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_SAINTS,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_2},fromCalendarId:ma,fromExtendedCalendars:[],weekday:{id:advent_2_friday,date:2025-12-12,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[5,2],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:2,dow:5}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:13,dayOfWeek:5,nthDayOfWeekInMonth:2,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_2},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}}]
2025-12-13[{id:lucy_of_syracuse_virgin,date:2025-12-13,dateDef:{month:12,date:13},dateExceptions:[],alternativeTransferDateDefs:[],precedence:GENERAL_MEMORIAL_10,rank:MEMORIAL,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[names:lucy_of_syracuse_virgin],seasons:[ADVENT],periods:[],colors:[RED],commonsDef:[VirginMartyrs,Virgins],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:14,dayOfWeek:6,nthDayOfWeekInMonth:2,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_SAINTS,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_2},fromCalendarId:ma,fromExtendedCalendars:[],weekday:{id:advent_2_saturday,date:2025-12-13,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[6,2],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:2,dow:6}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:14,dayOfWeek:6,nthDayOfWeekInMonth:2,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_2},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}}]
2025-12-14[{id:advent_3_sunday,date:2025-12-14,dateDef:{dateFn:sundayOfAdvent,dateArgs:[3],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PRIVILEGED_SUNDAY_2,rank:SUNDAY,allowSimilarRankItems:false,isHolyDayOfObligation:true,isOptional:false,i18nDef:[seasons:advent.sunday,{week:3}],seasons:[ADVENT],periods:[],colors:[ROSE,PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:3,dayOfSeason:15,dayOfWeek:0,nthDayOfWeekInMonth:2,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_3},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}]
2025-12-15[{id:advent_3_monday,date:2025-12-15,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[1,3],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:3,dow:1}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:3,dayOfSeason:16,dayOfWeek:1,nthDayOfWeekInMonth:3,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_3},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}]
2025-12-16[{id:advent_3_tuesday,date:2025-12-16,dateDef:{dateFn:unprivilegedWeekdayOfAdvent,dateArgs:[2,3],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:WEEKDAY_13,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.weekday,{week:3,dow:2}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:3,dayOfSeason:17,dayOfWeek:2,nthDayOfWeekInMonth:3,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_3},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}]
2025-12-17[{id:advent_december_17,date:2025-12-17,dateDef:{dateFn:privilegedWeekdayOfAdvent,dateArgs:[17],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PRIVILEGED_WEEKDAY_9,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.privileged_weekday,{day:17}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:3,dayOfSeason:18,dayOfWeek:3,nthDayOfWeekInMonth:3,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_3},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}]
2025-12-18[{id:advent_december_18,date:2025-12-18,dateDef:{dateFn:privilegedWeekdayOfAdvent,dateArgs:[18],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PRIVILEGED_WEEKDAY_9,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.privileged_weekday,{day:18}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:3,dayOfSeason:19,dayOfWeek:4,nthDayOfWeekInMonth:3,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_3},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}]
2025-12-19[{id:advent_december_19,date:2025-12-19,dateDef:{dateFn:privilegedWeekdayOfAdvent,dateArgs:[19],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PRIVILEGED_WEEKDAY_9,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.privileged_weekday,{day:19}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:3,dayOfSeason:20,dayOfWeek:5,nthDayOfWeekInMonth:3,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_3},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}]
2025-12-20[{id:advent_december_20,date:2025-12-20,dateDef:{dateFn:privilegedWeekdayOfAdvent,dateArgs:[20],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PRIVILEGED_WEEKDAY_9,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.privileged_weekday,{day:20}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:3,dayOfSeason:21,dayOfWeek:6,nthDayOfWeekInMonth:3,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_3},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}]
2025-12-21[{id:advent_4_sunday,date:2025-12-21,dateDef:{dateFn:sundayOfAdvent,dateArgs:[4],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PRIVILEGED_SUNDAY_2,rank:SUNDAY,allowSimilarRankItems:false,isHolyDayOfObligation:true,isOptional:false,i18nDef:[seasons:advent.sunday,{week:4}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:4,dayOfSeason:22,dayOfWeek:0,nthDayOfWeekInMonth:3,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_4},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}]
2025-12-22[{id:advent_december_22,date:2025-12-22,dateDef:{dateFn:privilegedWeekdayOfAdvent,dateArgs:[22],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PRIVILEGED_WEEKDAY_9,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.privileged_weekday,{day:22}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:4,dayOfSeason:23,dayOfWeek:1,nthDayOfWeekInMonth:4,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_4},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}]
2025-12-23[{id:advent_december_23,date:2025-12-23,dateDef:{dateFn:privilegedWeekdayOfAdvent,dateArgs:[23],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PRIVILEGED_WEEKDAY_9,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.privileged_weekday,{day:23}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:4,dayOfSeason:24,dayOfWeek:2,nthDayOfWeekInMonth:4,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_4},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]},{id:john_of_kanty_priest,date:2025-12-23,dateDef:{month:12,date:23},dateExceptions:[],alternativeTransferDateDefs:[],precedence:OPTIONAL_MEMORIAL_12,rank:OPTIONAL_MEMORIAL,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:true,i18nDef:[names:john_of_kanty_priest],seasons:[ADVENT],periods:[],colors:[],commonsDef:[Pastors,MercyWorkers],martyrology:[],titles:[],calendar:{weekOfSeason:4,dayOfSeason:24,dayOfWeek:2,nthDayOfWeekInMonth:4,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_SAINTS,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_4},fromCalendarId:ma,fromExtendedCalendars:[],weekday:{id:advent_december_23,date:2025-12-23,dateDef:{dateFn:privilegedWeekdayOfAdvent,dateArgs:[23],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PRIVILEGED_WEEKDAY_9,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.privileged_weekday,{day:23}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:4,dayOfSeason:24,dayOfWeek:2,nthDayOfWeekInMonth:4,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_4},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}}]
2025-12-24[{id:advent_december_24,date:2025-12-24,dateDef:{dateFn:privilegedWeekdayOfAdvent,dateArgs:[24],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PRIVILEGED_WEEKDAY_9,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:advent.privileged_weekday,{day:24}],seasons:[ADVENT],periods:[],colors:[PURPLE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:4,dayOfSeason:25,dayOfWeek:3,nthDayOfWeekInMonth:4,startOfSeason:2025-11-30,endOfSeason:2025-12-24,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[ADVENT]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_4},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}]
2025-12-25[{id:nativity_of_the_lord,date:2025-12-25,dateDef:{dateFn:christmas,yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PROPER_OF_TIME_SOLEMNITY_2,rank:SOLEMNITY,allowSimilarRankItems:false,isHolyDayOfObligation:true,isOptional:false,i18nDef:[names:nativity_of_the_lord],seasons:[CHRISTMAS_TIME],periods:[CHRISTMAS_OCTAVE,CHRISTMAS_TO_PRESENTATION_OF_THE_LORD],colors:[WHITE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:1,dayOfSeason:1,dayOfWeek:4,nthDayOfWeekInMonth:4,startOfSeason:2025-12-25,endOfSeason:2026-01-11,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[CHRISTMAS_TIME]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_4},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}]
2025-12-26[{id:stephen_the_first_martyr,date:2025-12-26,dateDef:{month:12,date:26},dateExceptions:[],alternativeTransferDateDefs:[],precedence:GENERAL_FEAST_7,rank:FEAST,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[names:stephen_the_first_martyr],seasons:[CHRISTMAS_TIME],periods:[CHRISTMAS_OCTAVE,CHRISTMAS_TO_PRESENTATION_OF_THE_LORD],colors:[RED],commonsDef:[None],martyrology:[],titles:[],calendar:{weekOfSeason:1,dayOfSeason:2,dayOfWeek:5,nthDayOfWeekInMonth:4,startOfSeason:2025-12-25,endOfSeason:2026-01-11,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[CHRISTMAS_TIME]},cycles:{properCycle:PROPER_OF_SAINTS,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_4},fromCalendarId:ma,fromExtendedCalendars:[],weekday:{id:christmas_octave_day_2,date:2025-12-26,dateDef:{dateFn:weekdayWithinOctaveOfChristmas,dateArgs:[2],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PRIVILEGED_WEEKDAY_9,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:christmas_time.octave,{count:2}],seasons:[CHRISTMAS_TIME],periods:[CHRISTMAS_OCTAVE,CHRISTMAS_TO_PRESENTATION_OF_THE_LORD],colors:[WHITE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:1,dayOfSeason:2,dayOfWeek:5,nthDayOfWeekInMonth:4,startOfSeason:2025-12-25,endOfSeason:2026-01-11,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[CHRISTMAS_TIME]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_4},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}}]
2025-12-27[{id:john_apostle,date:2025-12-27,dateDef:{month:12,date:27},dateExceptions:[],alternativeTransferDateDefs:[],precedence:GENERAL_FEAST_7,rank:FEAST,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[names:john_apostle],seasons:[CHRISTMAS_TIME],periods:[CHRISTMAS_OCTAVE,CHRISTMAS_TO_PRESENTATION_OF_THE_LORD],colors:[WHITE],commonsDef:[None],martyrology:[],titles:[],calendar:{weekOfSeason:1,dayOfSeason:3,dayOfWeek:6,nthDayOfWeekInMonth:4,startOfSeason:2025-12-25,endOfSeason:2026-01-11,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[CHRISTMAS_TIME]},cycles:{properCycle:PROPER_OF_SAINTS,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_4},fromCalendarId:ma,fromExtendedCalendars:[],weekday:{id:christmas_octave_day_3,date:2025-12-27,dateDef:{dateFn:weekdayWithinOctaveOfChristmas,dateArgs:[3],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PRIVILEGED_WEEKDAY_9,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:christmas_time.octave,{count:3}],seasons:[CHRISTMAS_TIME],periods:[CHRISTMAS_OCTAVE,CHRISTMAS_TO_PRESENTATION_OF_THE_LORD],colors:[WHITE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:1,dayOfSeason:3,dayOfWeek:6,nthDayOfWeekInMonth:4,startOfSeason:2025-12-25,endOfSeason:2026-01-11,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[CHRISTMAS_TIME]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_4},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}}]
2025-12-28[{id:holy_family_of_jesus_mary_and_joseph,date:2025-12-28,dateDef:{dateFn:holyFamily,yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:GENERAL_LORD_FEAST_5,rank:FEAST,allowSimilarRankItems:false,isHolyDayOfObligation:true,isOptional:false,i18nDef:[names:holy_family_of_jesus_mary_and_joseph],seasons:[CHRISTMAS_TIME],periods:[CHRISTMAS_OCTAVE,CHRISTMAS_TO_PRESENTATION_OF_THE_LORD],colors:[WHITE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:4,dayOfWeek:0,nthDayOfWeekInMonth:4,startOfSeason:2025-12-25,endOfSeason:2026-01-11,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[CHRISTMAS_TIME]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}]
2025-12-29[{id:christmas_octave_day_5,date:2025-12-29,dateDef:{dateFn:weekdayWithinOctaveOfChristmas,dateArgs:[5],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PRIVILEGED_WEEKDAY_9,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:christmas_time.octave,{count:5}],seasons:[CHRISTMAS_TIME],periods:[CHRISTMAS_OCTAVE,CHRISTMAS_TO_PRESENTATION_OF_THE_LORD],colors:[WHITE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:5,dayOfWeek:1,nthDayOfWeekInMonth:5,startOfSeason:2025-12-25,endOfSeason:2026-01-11,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[CHRISTMAS_TIME]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]},{id:thomas_becket_bishop,date:2025-12-29,dateDef:{month:12,date:29},dateExceptions:[],alternativeTransferDateDefs:[],precedence:OPTIONAL_MEMORIAL_12,rank:OPTIONAL_MEMORIAL,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:true,i18nDef:[names:thomas_becket_bishop],seasons:[CHRISTMAS_TIME],periods:[CHRISTMAS_OCTAVE,CHRISTMAS_TO_PRESENTATION_OF_THE_LORD],colors:[],commonsDef:[Martyrs,Bishops],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:5,dayOfWeek:1,nthDayOfWeekInMonth:5,startOfSeason:2025-12-25,endOfSeason:2026-01-11,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[CHRISTMAS_TIME]},cycles:{properCycle:PROPER_OF_SAINTS,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ma,fromExtendedCalendars:[],weekday:{id:christmas_octave_day_5,date:2025-12-29,dateDef:{dateFn:weekdayWithinOctaveOfChristmas,dateArgs:[5],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PRIVILEGED_WEEKDAY_9,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:christmas_time.octave,{count:5}],seasons:[CHRISTMAS_TIME],periods:[CHRISTMAS_OCTAVE,CHRISTMAS_TO_PRESENTATION_OF_THE_LORD],colors:[WHITE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:5,dayOfWeek:1,nthDayOfWeekInMonth:5,startOfSeason:2025-12-25,endOfSeason:2026-01-11,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[CHRISTMAS_TIME]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}}]
2025-12-30[{id:christmas_octave_day_6,date:2025-12-30,dateDef:{dateFn:weekdayWithinOctaveOfChristmas,dateArgs:[6],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PRIVILEGED_WEEKDAY_9,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:christmas_time.octave,{count:6}],seasons:[CHRISTMAS_TIME],periods:[CHRISTMAS_OCTAVE,CHRISTMAS_TO_PRESENTATION_OF_THE_LORD],colors:[WHITE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:6,dayOfWeek:2,nthDayOfWeekInMonth:5,startOfSeason:2025-12-25,endOfSeason:2026-01-11,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[CHRISTMAS_TIME]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}]
2025-12-31[{id:christmas_octave_day_7,date:2025-12-31,dateDef:{dateFn:weekdayWithinOctaveOfChristmas,dateArgs:[7],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PRIVILEGED_WEEKDAY_9,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:christmas_time.octave,{count:7}],seasons:[CHRISTMAS_TIME],periods:[CHRISTMAS_OCTAVE,CHRISTMAS_TO_PRESENTATION_OF_THE_LORD],colors:[WHITE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:7,dayOfWeek:3,nthDayOfWeekInMonth:5,startOfSeason:2025-12-25,endOfSeason:2026-01-11,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[CHRISTMAS_TIME]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]},{id:sylvester_i_pope,date:2025-12-31,dateDef:{month:12,date:31},dateExceptions:[],alternativeTransferDateDefs:[],precedence:OPTIONAL_MEMORIAL_12,rank:OPTIONAL_MEMORIAL,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:true,i18nDef:[names:sylvester_i_pope],seasons:[CHRISTMAS_TIME],periods:[CHRISTMAS_OCTAVE,CHRISTMAS_TO_PRESENTATION_OF_THE_LORD],colors:[],commonsDef:[PopeOrBishop],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:7,dayOfWeek:3,nthDayOfWeekInMonth:5,startOfSeason:2025-12-25,endOfSeason:2026-01-11,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[CHRISTMAS_TIME]},cycles:{properCycle:PROPER_OF_SAINTS,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ma,fromExtendedCalendars:[],weekday:{id:christmas_octave_day_7,date:2025-12-31,dateDef:{dateFn:weekdayWithinOctaveOfChristmas,dateArgs:[7],yearOffset:0},dateExceptions:[],alternativeTransferDateDefs:[],precedence:PRIVILEGED_WEEKDAY_9,rank:WEEKDAY,allowSimilarRankItems:false,isHolyDayOfObligation:false,isOptional:false,i18nDef:[seasons:christmas_time.octave,{count:7}],seasons:[CHRISTMAS_TIME],periods:[CHRISTMAS_OCTAVE,CHRISTMAS_TO_PRESENTATION_OF_THE_LORD],colors:[WHITE],commonsDef:[],martyrology:[],titles:[],calendar:{weekOfSeason:2,dayOfSeason:7,dayOfWeek:3,nthDayOfWeekInMonth:5,startOfSeason:2025-12-25,endOfSeason:2026-01-11,startOfLiturgicalYear:2025-11-30,endOfLiturgicalYear:2026-11-28,seasons:[CHRISTMAS_TIME]},cycles:{properCycle:PROPER_OF_TIME,sundayCycle:YEAR_A,weekdayCycle:YEAR_2,psalterWeek:WEEK_1},fromCalendarId:ProperOfTime,fromExtendedCalendars:[]}}]

Response Structure

All API responses follow a consistent structure with the following fields:

FieldTypeDescriptionExample
statusstringIndicates whether the request was successful ("ok") or failed ("error")ok
errorstring | nullContains error message if status is "error", otherwise nullnull
dataobject | nullContains the API response data if successful, otherwise null{...}

Response Data Fields

When the request is successful, the data object contains the following fields:

FieldTypeSample Value
[ ] Array items:array[1]Array of objects
â”” idstring"advent_1_monday"
â”” datestring"2025-12-01"
â”” dateDefobject{...}
â”” dateFnstring"unprivilegedWeekdayOfAdvent"
â”” dateArgsarray[1, ...]
â”” yearOffsetnumber0
â”” dateExceptionsarray[]
â”” alternativeTransferDateDefsarray[]
â”” precedencestring"WEEKDAY_13"
â”” rankstring"WEEKDAY"
â”” allowSimilarRankItemsbooleanfalse
â”” isHolyDayOfObligationbooleanfalse
â”” isOptionalbooleanfalse
â”” i18nDefarray["seasons:advent.weekday", ...]
â”” seasonsarray["ADVENT"]
â”” periodsarray[]
â”” colorsarray["PURPLE"]
â”” commonsDefarray[]
â”” martyrologyarray[]

Headers

Required and optional headers for API requests:

Header NameRequiredExample ValueDescription
X-API-KeyYesyour_api_key_hereYour APIVerve API key. Found in your dashboard under API Keys.
AcceptNoapplication/jsonSpecify response format: application/json (default), application/xml, or application/yaml
User-AgentNoMyApp/1.0Identifies your application for analytics and debugging purposes
X-Request-IDNoreq_123456789Custom request identifier for tracking and debugging requests
Cache-ControlNono-cacheControl caching behavior for the request and response

GraphQL AccessALPHA

Most APIVerve APIs support GraphQL queries, allowing you to combine multiple API calls into a single request and retrieve only the data you need. This powerful feature enables you to orchestrate complex data fetching with precise field selection.

Not all APIs support GraphQL. Check the API schema or test in the GraphQL Explorer to confirm availability for this specific endpoint.

Credit Cost: Each API called in your GraphQL query consumes its standard credit cost.

GraphQL Endpoint
POST https://api.apiverve.com/v1/graphql
GraphQL Query Example
query {
  liturgicalcalendar(
    input: {
      month: "02"
      year: "2025"
    }
  ) {
    2025_12_01
    2025_12_02
    2025_12_03
    2025_12_04
    2025_12_05
    2025_12_06
    2025_12_07
    2025_12_08
    2025_12_09
    2025_12_10
    2025_12_11
    2025_12_12
    2025_12_13
    2025_12_14
    2025_12_15
    2025_12_16
    2025_12_17
    2025_12_18
    2025_12_19
    2025_12_20
    2025_12_21
    2025_12_22
    2025_12_23
    2025_12_24
    2025_12_25
    2025_12_26
    2025_12_27
    2025_12_28
    2025_12_29
    2025_12_30
    2025_12_31
  }
}

Note: Authentication is handled via the x-api-key header in your GraphQL request, not as a query parameter.

CORS Support

The Liturgical Calendar API supports Cross-Origin Resource Sharing (CORS) with wildcard configuration, allowing you to call Liturgical Calendar directly from browser-based applications without proxy servers.

CORS HeaderValueDescription
Access-Control-Allow-Origin*Accepts requests from any origin
Access-Control-Allow-Methods*Accepts any HTTP method
Access-Control-Allow-Headers*Accepts any request headers

Browser Usage: You can make direct API calls from JavaScript running in the browser without encountering CORS errors. No additional configuration needed.

Rate Limiting

APIVerve implements rate limiting to ensure fair usage and maintain service quality across all users. Rate limits vary by subscription plan and are applied per API key.

PlanRate LimitDescription
Free5 requests/minHard rate limit enforced - exceeding will return 429 errors
StarterNo LimitProduction ready - no rate limiting or throttling
ProNo LimitProduction ready - no rate limiting or throttling
MegaNo LimitProduction ready - no rate limiting or throttling

Rate Limit Headers

When rate limits apply, each API response includes headers to help you track your usage:

HeaderDescription
X-RateLimit-LimitMaximum number of requests allowed per time window
X-RateLimit-RemainingNumber of requests remaining in the current window
X-RateLimit-ResetUnix timestamp when the rate limit window resets

Handling Rate Limits

Free Plan: When you exceed your rate limit, Liturgical Calendar returns a 429 Too Many Requests status code. Your application should implement appropriate backoff logic to handle this gracefully.

Paid Plans: No rate limiting or throttling applied. All paid plans (Starter, Pro, Mega) are production-ready.

Best Practices:

  • Monitor the rate limit headers to track your usage (Free plan only)
  • Implement caching where appropriate to reduce API calls
  • Upgrade to Pro or Mega for guaranteed no-throttle performance

Note: Rate limits are separate from credit consumption. You may have credits remaining but still hit rate limits on Free tier.

Client Libraries

To get started with minimal code, most of our APIs are available through client libraries and clients:

NPMPyPINuGetSwagger

Error Codes

The Liturgical Calendar API uses standard HTTP status codes to indicate success or failure:

CodeMessageDescriptionSolution
200OKRequest successful, data returnedNo action needed - request was successful
400Bad RequestInvalid request parameters or malformed requestCheck required parameters and ensure values match expected formats
401UnauthorizedMissing or invalid API keyInclude x-api-key header with valid API key from dashboard
403ForbiddenAPI key lacks permission or insufficient creditsCheck credit balance in dashboard or upgrade plan
429Too Many RequestsRate limit exceeded (Free: 5 req/min)Implement request throttling or upgrade to paid plan
500Internal Server ErrorServer error occurredRetry request after a few seconds, contact support if persists
503Service UnavailableAPI temporarily unavailableWait and retry, check status page for maintenance updates

Need help? Contact support with your X-Request-ID for assistance.

Integrate Liturgical Calendar with No-Code Tools

Connect the Liturgical Calendar API to your favorite automation platform without writing code. Build workflows that leverage liturgical calendar data across thousands of apps.

All platforms use your same API key to access Liturgical Calendar. Visit our integrations hub for step-by-step setup guides.

Frequently Asked Questions

How do I get an API key?
Sign up for a free account at dashboard.apiverve.com. Your API key will be automatically generated and available in your dashboard. The free plan includes 1,000 credits plus a 500 credit bonus.
What are credits and how do they work?

Credits are your API usage currency. Each successful API call consumes credits based on the API's complexity. Most APIs cost 1 credit per call, while more complex APIs may cost 2-5 credits. Failed requests and errors don't consume credits. Check the API details above to see the credit cost for this specific API.

Can I use Liturgical Calendar in production?

The free plan is for testing and development only. For production use of Liturgical Calendar, upgrade to a paid plan (Starter, Pro, or Mega) which includes commercial use rights, no attribution requirements, and guaranteed uptime SLAs. All paid plans are production-ready.

Can I use Liturgical Calendar from a browser?
Yes! The Liturgical Calendar API supports CORS with wildcard configuration, so you can call it directly from browser-based JavaScript without needing a proxy server. See the CORS section above for details.
What happens if I exceed my credit limit?

When you reach your monthly credit limit, API requests will return an error until you upgrade your plan or wait for the next billing cycle. You'll receive notifications at 80% and 95% usage to give you time to upgrade if needed.

What's Next?

Continue your journey with these recommended resources

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