Movable feasts for a year API

Derives the Easter-anchored movable feasts (Ash Wednesday, Palm Sunday, Good Friday, Ascension, Pentecost, Corpus Christi, etc.) for a year from Easter offsets, Western or Orthodox. Answers 'When is Ash Wednesday 2026?', 'Dates of all movable feasts this year?'.

Price$0.04per request

MethodPOST

Route/v1/datetime/movable-feasts

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

datetimemovable-feastseasterliturgicalash-wednesdaypentecostgood-fridaycalendar

API URLhttps://x402.hexl.dev/v1/datetime/movable-feasts

Integration docs

Example request

{
  "year": 2026
}

Example response

{
  "year": 2026,
  "calendar": "gregorian",
  "feasts": {
    "septuagesimaSunday": "2026-02-01",
    "ashWednesday": "2026-02-18",
    "palmSunday": "2026-03-29",
    "maundyThursday": "2026-04-02",
    "goodFriday": "2026-04-03",
    "holySaturday": "2026-04-04",
    "easterSunday": "2026-04-05",
    "ascensionDay": "2026-05-14",
    "pentecost": "2026-05-24",
    "trinitySunday": "2026-05-31",
    "corpusChristi": "2026-06-04"
  },
  "interpretation": "Ash Wednesday 2026-02-18, Good Friday 2026-04-03, Easter 2026-04-05, Pentecost 2026-05-24."
}

Input schema

{
  "type": "object",
  "required": [
    "year"
  ],
  "properties": {
    "year": {
      "type": "integer",
      "examples": [
        2026
      ]
    },
    "calendar": {
      "type": "string",
      "enum": [
        "gregorian",
        "julian"
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}