Overview
Sun Position works by analyzing the location provided and calculating sun position data. It uses advanced algorithms to calculate data such as altitude, azimuth, and distance of the sun from the location and returns the sun 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/sunposition?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/sunposition?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/sunposition?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/sunposition?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 sun position data for (MM-DD-YYYY) date |
timeOptional | string | The time of day for the calculation (HH:mm format, 24-hour), read in the timezone of the coordinates. Defaults to 00:00 if not provided time |
timezoneOptional | string | IANA timezone to read the date and time in, such as America/Los_Angeles. Defaults to the timezone of the 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": "01-16-2026",
"time": "14:30",
"timezone": "America/Los_Angeles",
"timestampUTC": "2026-01-16T22:30:00.000Z",
"coordinates": {
"latitude": 37.7749,
"longitude": -122.4194
},
"sun": {
"altitude": 0.41616137328975444,
"azimuth": 0.5817558808515568,
"altitudeDegrees": 23.844,
"azimuthDegrees": 33.332,
"compassBearing": 213.332,
"isDaylight": true,
"declination": -20.7961,
"rightAscension": 19.9228,
"hourAngle": 2.174,
"distance": 0.983786
},
"equationOfTime": -9.88,
"airMass": 2.454,
"clearSky": {
"directNormal": 702.4,
"globalHorizontal": 284.9
},
"shadowRatio": 2.254,
"panelAim": {
"tilt": 66.07,
"azimuth": 213.44
}
}
}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 | "01-16-2026" | Date the position was calculated for |
time | string | "14:30" | Time of day the position was calculated for |
timezone | string | "America/Los_Angeles" | IANA timezone the date and time were read in, resolved from the coordinates unless one was given |
timestampUTC | string | "2026-01-16T22:30:00.000Z" | The instant the position was calculated for, in UTC, so the answer is unambiguous |
coordinates | object | {...} | The point on Earth the position was calculated from |
latitude | number | 37.7749 | Latitude used for the calculation |
longitude | number | -122.4194 | Longitude used for the calculation |
sun | object | {...} | Where the sun sits in the sky at that time and place |
altitude | number | 0.41616137328975444 | Height of the sun above the horizon, in radians; negative when the sun is below the horizon. Multiply by 180/PI for degrees |
azimuth | number | 0.5817558808515568 | Direction of the sun, in radians measured from due south and increasing westward. Multiply by 180/PI for degrees, then add 180 for a compass bearing |
altitudeDegrees | number | 23.844 | Height of the sun above the horizon in degrees; negative when below |
azimuthDegrees | number | 33.332 | Direction of the sun in degrees from due south, increasing westward |
compassBearing | number | 213.332 | Direction of the sun as a compass bearing, 0 for north and 180 for south |
isDaylight | boolean | true | Whether the sun is above the horizon at this time and place |
declinationPremium | number | -20.7961 | Angle of the sun north or south of the celestial equator, in degrees |
rightAscensionPremium | number | 19.9228 | Position of the sun along the celestial equator, in hours |
hourAnglePremium | number | 2.174 | Hours since the sun crossed the local meridian; negative before solar noon |
distancePremium | number | 0.983786 | Distance from Earth to the sun in astronomical units |
equationOfTimePremium | number | -9.88 | Minutes a sundial reads ahead of the clock at this date; negative when it reads behind |
airMassPremium | number | 2.454 | How much atmosphere the sunlight crosses, as a multiple of straight overhead; null after dark |
clearSkyPremium | object | {...} | Cloudless-sky irradiance estimate in watts per square metre; null after dark |
directNormalPremium | number | 702.4 | Irradiance on a surface aimed straight at the sun, which is what a tracker sees |
globalHorizontalPremium | number | 284.9 | Irradiance on a flat horizontal surface |
shadowRatioPremium | number | 2.254 | Length of the shadow cast by an object, per unit of its height; null after dark |
panelAimPremium | object | {...} | Where to point a solar panel to face the sun squarely at this moment; null after dark |
tiltPremium | number | 66.07 | Degrees to tilt the panel back from vertical |
azimuthPremium | number | 213.44 | Compass bearing to point the panel at |
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. |
Use cases
- Solar Energy
- Use the Sun Position API to get sun position data for solar energy. Use the data to optimize solar panel placement, improve energy efficiency, and maximize power generation
- Astronomy
- Get sun position data by using the Sun Position API for astronomy. Use the data to track celestial events, observe solar phenomena, and enhance stargazing
- Photography
- Use the Sun Position API to get sun position data for photography. Use the data to plan photo shoots, optimize lighting conditions, and capture stunning images
- Outdoor Activities
- Get sun position data by using the Sun Position API for outdoor activities. Use the data to plan outdoor events, schedule activities, and enhance experiences
Other ways to use Sun Position
Set up Sun 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: