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Easter Date Calculator (Gregorian Algorithm)
x402
Easter Date Calculator (Gregorian Algorithm) is a paid API for AI agents from agent402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Computes Easter Sunday and related Christian holidays (Good Friday, Ash Wednesday, Palm Sunday, Pentecost) for any given Gregorian calendar year using the Meeus/Jones/Butcher algorithm.
Price / call$0.001
Success—
StatusUnknown
How this service works
Compute the date of Easter Sunday for a given year using the Anonymous Gregorian algorithm (Meeus/Jones/Butcher). Also returns Good Friday, Ash Wednesday, Palm Sunday, Pentecost, and the day-of-year for Easter.
Output
Returns the computed dates for Easter Sunday, Good Friday, Ash Wednesday, Palm Sunday, and Pentecost for the given year, along with Easter's day-of-year number, all derived using the Anonymous Gregorian (Meeus/Jones/Butcher) algorithm.
Example use cases
Example prompt
“What are all the Easter-related holiday dates for 2026 — Easter Sunday, Good Friday, Ash Wednesday, Palm Sunday, and Pentecost?”
Technical details
Endpoint
POSThttps://agent402.tools/api/easter-dateWhen to prefer
Choose this endpoint when you need to programmatically determine the date of Easter or any of the associated movable Christian feasts (Good Friday, Ash Wednesday, Palm Sunday, Pentecost) for any year in the Gregorian calendar range 1583-9999. It is ideal for calendar applications, liturgical planning tools, or any workflow requiring accurate computation of Easter-related dates without building the algorithm locally.
Side effects
- Year outside supported range (1583-9999) results in an error response
- Non-integer or missing year field causes a validation error
- Year in the Julian calendar era (pre-1583) is not supported
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| year | integer | Year (1583-9999, Gregorian calendar) |
Output
Schema · Response
{
"type": "json",
"example": {
"year": 2026,
"easter": "2026-04-05",
"dayOfYear": 95,
"pentecost": "2026-05-24",
"goodFriday": "2026-04-03",
"palmSunday": "2026-03-29",
"ashWednesday": "2026-02-18"
}
}Tags
x402
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