# calendars reference

drillable.com › aa-usno-navy-mil › easter › calendars reference.
As of the index built 9 Sep 2026, 19:43 UTC · [cites, never asserts](/standing).
Source: The Date of Easter, by https://aa.usno.navy.mil.
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## Records (1)

By drillable.com ([llm-extract/1](/standing#methods)); scored precision 1.00, recall 0.43 on the harness's last sample of 28.

- **citation** = Richards, E.G. 2012, "Calendars," Explanatory Supplement to the Astronomical Almanac, 3rd edition, Chapter 15, pp. 585-624 · [quote](/r/sha256:6dd32d92e3e72a8e07914f4ad6c7fc567c63330079396ea36381f148d13e0d0d?trace&start=5416&end=5629) · [sha256:609d9c3039d49710…](/r/sha256:609d9c3039d49710b93f3dcdc5009def97b68b7f1c1c09ad5783a3cfcfc860c5)

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