/api/astro/seasons/1 creditEquinoxes, solstices and ritus
The two equinoxes, the two solstices and the six Indian ritus for a year. Each solar moment is named by its month and returned in chronological order. That matters: the underlying data gives the solstices December-first, so reading the first entry as the June one would be wrong half the time. The ritus — Vasant, Grishma, Varsha, Sharad, Hemant and Shishir — are the Indian seasonal division and do not line up with the four-season calendar: there are six, each about two months, anchored to the Sun's sidereal position rather than to the solstices.
https://yogataraapi.prahlad.app/api/astro/seasons/Authentication
Send your key in the X-API-Key header. Keys are server-side credentials — never put one in browser JavaScript or a mobile app.
X-API-Key: yt_live_a1b2c3d4_…
Content-Type: application/jsonRequest fields
| Field | Type | Required | Notes |
|---|---|---|---|
| date_time | string (date-time) | required | The moment to calculate for, ISO 8601. ALWAYS include an offset or a trailing Z - a value with no zone is read as Asia/Kolkata (UTC+05:30), not UTC, and can return the previous day's result with a 200. '2026-09-01T06:00:00Z' and '2026-09-01 06:00:00' are different instants and give different answers. |
| latitude | number (double) | required | Latitude of the place, in decimal degrees. Positive is north, negative is south. Example: 26.9124 for Jaipur, 40.7128 for New York. Minutes and seconds are not accepted - convert first. min -90 · max 90 |
| longitude | number (double) | required | Longitude of the place, in decimal degrees. Positive is east, negative is west. Example: 75.7873 for Jaipur, -74.0060 for New York. Note the sign: a missing minus puts New York in China. min -180 · max 180 |
| timezone_as_float | number (double) | required | UTC offset of the place, in hours, as a decimal. Example: 5.5 for India (UTC+05:30), -5 for New York in winter, 5.75 for Nepal. This is NOT validated against date_time - if the two disagree you get a successful response for the wrong moment, so derive both from the same source. Use the offset in force on that date, not today's: a summer birth in a country with daylight saving needs the summer offset. min -12 · max 14 |
| year | integer | required | Year of birth as a number, e.g. 1990. Four digits. |
| keys | array | optional | Which calculations to return, as a list of names. See the key table for this endpoint; an unrecognised name rejects the whole request. One call costs one credit however many keys you ask for, so request everything you need at once rather than making several calls. |
| nakshatra | string | optional | Only read by /nakshatra-chakras/; ignored elsewhere. |
Example request
curl -X POST https://yogataraapi.prahlad.app/api/astro/seasons/ \
-H "X-API-Key: $OCCULT_API_KEY" \
-H "Content-Type: application/json" \
-d '{"year":2025,"date_time":"2025-02-13T05:00:37Z","latitude":26.9124,"longitude":75.7873,"timezone_as_float":5.5}'Response
{
"data": {
"year": 2025,
"equinoxes": [
{
"name": "March",
"moment": "2025-03-20T09:01:29Z"
},
{
"name": "September",
"moment": "2025-09-22T18:19:20Z"
}
],
"solstices": [
{
"name": "June",
"moment": "2025-06-21T02:42:16Z"
},
{
"name": "December",
"moment": "2025-12-21T15:03:05Z"
}
],
"ritus": [
{
"ritu": "Vasant",
"name": "Vasant Ritu (Indian Spring)",
"subtitle": "Spring - Vasant",
"begins": "2025-02-18T10:06:34Z",
"ends": "2025-04-19T19:56:00Z",
"tropical_zodiac": [
"Pisces",
"Aries"
],
"note": "Vernal Equinox occurs at the middle of Vasant Ritu",
"image_url": "https://res.cloudinary.com/dd5qujmj9/image/upload/v1785388301/Vasanta_Ritu_muqpf3.svg"
},
{
"ritu": "Grishma",
"name": "Grishma Ritu (Indian Summer)",
"subtitle": "Summer - Grishma",
"begins": "2025-04-19T19:56:00Z",
"ends": "2025-06-21T02:42:16Z",
"tropical_zodiac": [
"Taurus",
"Gemini"
],
"note": "Grishma Ritu ends with Summer Solstice",
"image_url": "https://res.cloudinary.com/dd5qujmj9/image/upload/v1785388300/Grishma_Ritu_vhdu0v.svg"
},
{
"ritu": "Varsha",
"name": "Varsha Ritu (Indian Monsoon)",
"subtitle": "Monsoon - Varsha",
"begins": "2025-06-21T02:42:16Z",
"ends": "2025-08-22T20:33:52Z",
"tropical_zodiac": [
"Cancer",
"Leo"
],
"note": "Varsha Ritu starts with Summer Solstice",
"image_url": "https://res.cloudinary.com/dd5qujmj9/image/upload/v1785388301/Varsha_Ritu_tvqnhl.svg"
},
{
"ritu": "Sharad",
"name": "Sharad Ritu (Indian Autumn)",
"subtitle": "Autumn - Sharad",
"begins": "2025-08-22T20:33:52Z",
"ends": "2025-10-23T03:50:55Z",
"tropical_zodiac": [
"Virgo",
"Libra"
],
"note": "Autumnal Equinox occurs at the middle of Sharad Ritu",
"image_url": "https://res.cloudinary.com/dd5qujmj9/image/upload/v1785388302/Sharad_Ritu_nvzy4z.svg"
},
{
"ritu": "Hemant",
"name": "Hemant Ritu (Indian Prewinter)",
"subtitle": "Prewinter - Hemant",
"begins": "2025-10-23T03:50:55Z",
"ends": "2025-12-21T15:03:05Z",
"tropical_zodiac": [
"Scorpio",
"Sagittarius"
],
"note": "Hemant Ritu ends with Winter Solstice",
"image_url": "https://res.cloudinary.com/dd5qujmj9/image/upload/v1785388300/Hemanta_Ritu_a3sole.svg"
},
{
"ritu": "Shishir",
"name": "Shishir Ritu (Indian Winter)",
"subtitle": "Winter - Shishir",
"begins": "2025-12-21T15:03:05Z",
"ends": "2026-02-18T15:51:55Z",
"tropical_zodiac": [
"Capricorn",
"Aquarius"
],
"note": "Shishir Ritu starts with Winter Solstice",
"image_url": "https://res.cloudinary.com/dd5qujmj9/image/upload/v1785388300/Shishira_Ritu_sffdv3.svg"
}
]
},
"status": 200,
"is_error": false,
"message": "successful"
}Captured from a real call using the exact request above. Results sit under data.
Errors
Metering errors return { "error": "…", "message": "<code>", "is_error": true }. Show error to people and branch on message. See the error reference.