Mastodawn

Wife out of the blue asked: "What day is Easter?"
Me: "Huh? It keeps moving around as it's tied to the new moon, or something..."

Vaguely remembered there was a formula to calculate the date, but was puzzled by wife's interest as Easter Bunny and eggs AFAIK haven't really taken off yet in Japan. Insidious effects of Tokyo Disneyland propaganda?🤔
Found the date (5 April 2026) and the Butcher-Meeus algorithm. [1,2]

1. https://en.wikipedia.org/wiki/Date_of_Easter
2. https://www.baeldung.com/java-determine-easter-date-specific-year
#Easter #calculation

Show thread

Minoru Saba 6d ago

"The dates of the full Moon and the March equinox that are used to calculate Easter are not the astronomical dates of these events, but rather the ecclesiastical dates."
https://www.almanac.com/easter-paschal-full-moon
🔸Reading this reminded me of the complexities of the Ptolemaic cosmology, but then calculations of the date of Easter began when geocentrism held sway, so similar mindsets?🤔

Easter and the Full Moon: Understanding the Paschal Moon Rule

Explore the relationship between Easter, the Paschal Full Moon, and the March equinox with clear explanations and 2026 dates.

Almanac.com