Derive the movable feast skeleton from Easter #16

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opened 2026-07-01 00:50:53 +00:00 by manlycucumber · 0 comments

manlycucumber commented

2026-07-01 00:50:53 +00:00

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Problem

Given Easter, the engine must derive the dependent movable points: Septuagesima, Ash Wednesday, Ascension, Pentecost, Corpus Christi, and the Sundays counted from them.

Acceptance criteria

A movable-feast calculator yields all Easter-relative anchor dates for a year
Offsets are expressed in days relative to Easter, not hard-coded
Unit tests verify each anchor for at least three sample years
Leap-year handling is asserted

Notes

Anchors feed temporal-block filling.

## Problem Given Easter, the engine must derive the dependent movable points: Septuagesima, Ash Wednesday, Ascension, Pentecost, Corpus Christi, and the Sundays counted from them. ## Acceptance criteria - [ ] A movable-feast calculator yields all Easter-relative anchor dates for a year - [ ] Offsets are expressed in days relative to Easter, not hard-coded - [ ] Unit tests verify each anchor for at least three sample years - [ ] Leap-year handling is asserted ## Notes Anchors feed temporal-block filling.

manlycucumber referenced this issue from a commit

2026-08-05 19:02:29 +00:00

feat: add PaschalSkeleton for Easter-anchored movable feasts (#207)

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Reference

Directorium/Core#16

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