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Old February 19th 10, 05:02 PM posted to sci.math,sci.physics,sci.astro,sci.lang,alt.usage.english
LFS
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Default The perpetual calendar

Evan Kirshenbaum wrote:
"Peter T. Daniels" writes:

On Feb 19, 4:34 am, James Hogg wrote:


My Book of Common Prayer makes things easy by pointing out that
"the moon referred to in the definition of Easter Day is not the
actual moon of the heavens, but the Calendar Moon, or Moon of the
Lunar Cycle, which is counted as full on its fourteenth day,
reckoned from the day of the Calendar New Moon inclusive." Also, in
a Bissextile Year "the number of Sundays after Epiphany will be the
same, as if Easter Day had fallen one day later than it really
does."

Which is why Easter and Passover rarely coincide -- we happen to have
had a spate of coincidence in recent years, but that'll soon be over.


Which years were those? I had thought that the current Easter rules
made it impossible for it to fall on the 15th of Nissan.


I understood that it is not actually impossible but that the coincidence
is very rare. ISTR it happened at some point in the early 1980s. Of
course, Passover week quite often covers Good Friday and Easter Sunday -
it does this year.

--
Laura
(emulate St. George for email)