Overview
A moon and lunar position API. Moon Position works by analyzing the location provided and calculating moon position data. It uses advanced algorithms to calculate data such as altitude, azimuth, and distance of the moon from the location and returns the moon position data.
Endpoint
One host, one path per API. The block below shows this call in four languages; every one of them is the same HTTP request. Making requests covers the timeouts, retries and parameter rules that apply to all of them. The SDKs wrap the same call in a typed client.
curl "https://api.apiverve.com/v1/moonposition?lat=37.7749&lon=-122.4194&date=01-16-2026&time=14%3A30&timezone=America%2FLos_Angeles" \
-H "x-api-key: your_api_key_here"const res = await fetch('https://api.apiverve.com/v1/moonposition?lat=37.7749&lon=-122.4194&date=01-16-2026&time=14%3A30&timezone=America%2FLos_Angeles', {
headers: { 'x-api-key': 'your_api_key_here' },
});
if (!res.ok) throw new Error(`${res.status} ${await res.text()}`);
const { data } = await res.json();
console.log(data);import requests
res = requests.get(
"https://api.apiverve.com/v1/moonposition?lat=37.7749&lon=-122.4194&date=01-16-2026&time=14%3A30&timezone=America%2FLos_Angeles",
headers={"x-api-key": "your_api_key_here"},
timeout=15,
)
res.raise_for_status()
print(res.json()["data"])package main
import (
"fmt"
"io"
"net/http"
)
func main() {
req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/moonposition?lat=37.7749&lon=-122.4194&date=01-16-2026&time=14%3A30&timezone=America%2FLos_Angeles", nil)
req.Header.Set("x-api-key", "your_api_key_here")
res, err := http.DefaultClient.Do(req)
if err != nil {
panic(err)
}
defer res.Body.Close()
out, _ := io.ReadAll(res.Body)
fmt.Println(string(out))
}Replace your_api_key_here with the key from your dashboard. When the inputs arrive as a list rather than one at a time, batch requests run up to 200 of them through this same API in a single call.
Authentication
Send your key in the x-api-key header. That is the only auth step — there is no token exchange and no per-endpoint scope to configure. Authentication covers creating, rotating and revoking keys.
A 401 means the key is missing, invalid or expired. A 403 means the key is valid but not permitted here — blocked by a key restriction or an IP allow-list. Running out of credits is a 429.
Parameters
Sent in the query string. Premium parameters are accepted on every plan but only take effect on plans that include them.
| Parameter | Type | Description |
|---|---|---|
latRequired | number | The latitude of the location range -90–90 |
lonRequired | number | The longitude of the location range -180–180 |
dateOptionalPremium | string | The date to get the moon position data for (MM-dd-yyyy) date |
timeOptional | string | The time of day for the calculation (HH:mm format, 24-hour). Defaults to 00:00 if not provided time |
timezoneOptional | string | IANA timezone name the date and time are given in. Defaults to the timezone of the supplied coordinates timezone |
Response
Every API returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape. Response format covers the envelope, the other output formats and how premium fields are withheld.
{
"status": "ok",
"error": null,
"data": {
"date": "01-22-2026",
"time": "14:30",
"coordinates": {
"latitude": 37.7749,
"longitude": -122.4194
},
"moon": {
"altitude": -0.407908976399288,
"azimuth": 1.4720499058762104,
"distance": 404332.6834067969
}
}
}
Response fields
Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.
| Field | Type | Example | Description |
|---|---|---|---|
date | string | "01-22-2026" | The date for which moon position was calculated |
time | string | "14:30" | The time of observation in HH:MM format |
coordinates | object | {...} | The observation location the position was calculated for |
latitude | number | 37.7749 | The latitude coordinate of the observation location |
longitude | number | -122.4194 | The longitude coordinate of the observation location |
moon | object | {...} | The moon's position as seen from the observation location |
altitude | number | -0.407908976399288 | Moon altitude above the horizon in radians, calculated from observation location. Negative values mean the moon is below the horizon |
azimuthPremium | number | 1.4720499058762104 | Moon azimuth in radians, derived astronomical calculation |
distancePremium | number | 404332.6834067969 | Distance from observer to moon in kilometers |
Errors
Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change. Error handling covers the full status list and which of them are worth retrying.
| Status | Meaning | What to do |
|---|---|---|
400 | Input was rejected | Read error; it names the parameter. |
401 | Key missing or invalid | Check the header name and the key value. |
403 | Key valid, but not permitted | A key restriction or IP allow-list; see key scoping. |
429 | Rate limited, or out of credits | Read error to tell them apart; see rate limits. |
Start from a template
A working app built on this API, ready to deploy with your own key. Vercel asks for the key when you deploy; the code is on GitHub to change first.
Use cases
- Night Photography Planning
- Landscape photographers check moon altitude across evening hours to time foreground illumination and align night-sky shots.
- Telescope Pointing Assistants
- Amateur astronomy software plots lunar elevation by observer coordinates to guide telescope targeting during backyard stargazing sessions.
- Coastal Night Navigation
- When planning coastal night voyages, marine navigation tools track lunar altitude to anticipate natural visibility over open water.
- Nocturnal Wildlife Research
- Field biology platforms log lunar elevation against animal GPS tracks to correlate predator hunting patterns with ambient moonlight.
Other ways to use Moon Position
Set up Moon Position on APIVerve, or reach the same source a different way. Your APIVerve account and credits work on all of them — one key, one balance.
Related
More in Astrology: