Julian Day Calculator API

GET Endpoint

https://api.apiverve.com/v1/julianday

Code Examples

Here are examples of how to call the Julian Day Calculator API in different programming languages:

curl -X GET \
  "https://api.apiverve.com/v1/julianday?date=2024-03-15" \
  -H "X-API-Key: your_api_key_here"

const response = await fetch('https://api.apiverve.com/v1/julianday?date=2024-03-15', {
  method: 'GET',
  headers: {
    'X-API-Key': 'your_api_key_here',
    'Content-Type': 'application/json'
  }
});

const data = await response.json();
console.log(data);

import requests

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

response = requests.get('https://api.apiverve.com/v1/julianday?date=2024-03-15', headers=headers)

data = response.json()
print(data)

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/julianday?date=2024-03-15', options, (res) => {
  let data = '';
  res.on('data', (chunk) => data += chunk);
  res.on('end', () => console.log(JSON.parse(data)));
});

req.end();

<?php

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://api.apiverve.com/v1/julianday?date=2024-03-15');
curl_setopt($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);

?>

package main

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

)

func main() {
    req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/julianday?date=2024-03-15", 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))
}

require 'net/http'
require 'json'

uri = URI('https://api.apiverve.com/v1/julianday?date=2024-03-15')
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))

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/julianday?date=2024-03-15");
        response.EnsureSuccessStatusCode();

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

Authentication

The Julian Day Calculator API requires authentication via API key. Include your API key in the request header:

X-API-Key: your_api_key_here

Learn more about authentication →

Interactive API Playground

Test the Julian Day Calculator API directly in your browser with live requests and responses.

Parameters

The Julian Day Calculator API supports multiple query options. Use one of the following:

Response

The Julian Day Calculator API returns responses in JSON, XML, YAML, and CSV formats:

Example Responses

{
  "status": "ok",
  "error": null,
  "data": {
    "gregorian": "2024-03-15",
    "julianDayNumber": 2460385,
    "modifiedJulianDate": 60384.5,
    "dayOfWeek": "Friday",
    "weekNumber": 11,
    "dayOfYear": 75,
    "daysFromToday": -340
  }
}

<?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>
    <gregorian>2024-03-15</gregorian>
    <julianDayNumber>2460385</julianDayNumber>
    <modifiedJulianDate>60384.5</modifiedJulianDate>
    <dayOfWeek>Friday</dayOfWeek>
    <weekNumber>11</weekNumber>
    <dayOfYear>75</dayOfYear>
    <daysFromToday>-340</daysFromToday>
  </data>
</response>

status: ok
error: null
data:
  gregorian: '2024-03-15'
  julianDayNumber: 2460385
  modifiedJulianDate: 60384.5
  dayOfWeek: Friday
  weekNumber: 11
  dayOfYear: 75
  daysFromToday: -340

Response Structure

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

Learn more about response formats →

Response Data Fields

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

Headers

Required and optional headers for Julian Day Calculator API requests:

Learn more about request headers →

GraphQL AccessALPHA

Access Julian Day Calculator through GraphQL to combine it with other API calls in a single request. Query only the julian day calculator data you need with precise field selection, and orchestrate complex data fetching workflows.

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

POST https://api.apiverve.com/v1/graphql

query {
  julianday(
    input: {
      date: "2024-03-15"
    }
  ) {
    gregorian
    julianDayNumber
    modifiedJulianDate
    dayOfWeek
    weekNumber
    dayOfYear
    daysFromToday
  }
}

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

CORS Support

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

Browser Usage: You can call Julian Day Calculator directly from JavaScript running in the browser without encountering CORS errors. No proxy server or additional configuration needed.

Learn more about CORS support →

Rate Limiting

Julian Day Calculator API requests are subject to rate limiting based on your subscription plan. These limits ensure fair usage and maintain service quality for all Julian Day Calculator users.

Learn more about rate limiting →

Rate Limit Headers

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

Handling Rate Limits

Free Plan: When you exceed your rate limit, Julian Day Calculator 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 for Julian Day Calculator:

• Monitor the rate limit headers to track your Julian Day Calculator usage (Free plan only)
• Cache julian day calculator responses where appropriate to reduce API calls
• Upgrade to Pro or Mega for guaranteed no-throttle Julian Day Calculator performance

Note: Julian Day Calculator rate limits are separate from credit consumption. You may have credits remaining but still hit rate limits when using Julian Day Calculator on Free tier.

Error Codes

The Julian Day Calculator API uses standard HTTP status codes to indicate success or failure:

Learn more about error handling →

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

Integrate Julian Day Calculator with SDKs

Get started quickly with official Julian Day Calculator SDKs for your preferred language. Each library handles authentication, request formatting, and error handling automatically.

Available for Node.js, Python, C#/.NET, and Android/Java. All SDKs are open source and regularly updated.

JitPack

Integrate Julian Day Calculator with No-Code API Tools

Connect the Julian Day Calculator API to your favorite automation platform without writing code. Build workflows that leverage julian day calculator data across thousands of apps.

ZapierConnect Julian Day Calculator to 6,000+ apps

MakeBuild visual julian day calculator workflows

PipedreamCode-friendly julian day calculator automation

n8nSelf-host your julian day calculator workflows

Power AutomateUse Julian Day Calculator in Microsoft 365

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