POST/api/astro/tithi/1 credit

Tithi

The lunar day in force at the moment you ask, with its start, end and how much of it is left, plus every tithi touching the local day. A tithi is one thirtieth of the moon's cycle relative to the sun, so it is not a fixed length: it can run anywhere from about nineteen to twenty-six hours, which is why `start`, `end` and `remaining` matter more than the name alone. `paksha` says which fortnight - Shukla waxing, Krishna waning. `special_name` carries the classical name where the tithi has one, and `segments` lists every tithi overlapping the calendar day, for a timeline.

https://yogataraapi.prahlad.app/api/astro/tithi/

Test Request

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/json

Request 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 -89.9 · max 89.9
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
dhuma_vyatipata_relation	string	optional	`360_minus_dhumadhuma_plus_53_20`
eccentric_anomaly	number (double)	optional
eccentricity	number (double)	optional
gulika_portion	string	optional	`saturneighth`
gulika_rises_at	string	optional	`beginningmiddleend`
kala_mrityu_rise_at	string	optional	`beginningmiddleend`
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.
mandi_portion	string	optional	`saturneighth`
mandi_rises_at	string	optional	`beginningmiddleend`
mean_anomaly	number (double)	optional
mode	string	optional
nakshatras	string	optional
samvata_type	string	optional
tolerance	number (double)	optional

Example request

curl -X POST https://yogataraapi.prahlad.app/api/astro/tithi/ \
  -H "X-API-Key: $OCCULT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"date_time":"2026-09-01T06:00:00+05:30","timezone_as_float":5.5,"latitude":26.9124,"longitude":75.7873}'

Response

{
  "data": {
    "name": "Chaturthi",
    "name_hi": "चतुर्थी",
    "number": 19,
    "paksha": "Krishna",
    "paksha_hi": "कृष्ण",
    "start": "2026-08-31T03:22:09Z",
    "end": "2026-09-01T02:12:57Z",
    "remaining": {
      "hours": 1,
      "minutes": 42,
      "seconds": 57
    },
    "special_name": null,
    "segments": [
      {
        "paksha": "Krishna",
        "name": "Chaturthi",
        "number": 19,
        "start_time": "2026-08-31T03:22:09Z",
        "end_time": "2026-09-01T02:12:57Z",
        "paksha_hi": "कृष्ण",
        "name_hi": "चतुर्थी"
      },
      {
        "paksha": "Krishna",
        "name": "Panchami",
        "number": 20,
        "start_time": "2026-09-01T02:12:57Z",
        "end_time": "2026-09-02T00:43:35Z",
        "paksha_hi": "कृष्ण",
        "name_hi": "पंचमी"
      }
    ]
  },
  "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.