In soc.religion.christian, message <G8ZFj.1999$VK4.1555@[EMAIL PROTECTED]
>, Tue,
25 Mar 2008 02:08:38, curmudgeon <briticanlankey@[EMAIL PROTECTED]
> posted:
> Easter is always the first Sunday after the first full moon after the
> spring equinox.
No : Easter is always the first Sunday AFTER the first Ecclesiastical
Full Moon ON OR AFTER the nominal Vernal Equinox. The Ecclesiastical
Full Moon differs slightly from the actual Moon. By convention, the
Vernal Equinox is in March everywhere, but in places like Australia the
Spring Equinox is in September. For Easter, the Vernal Equinox is taken
as being March 21 everywhere.
In 2200-2299, for years with Golden Number = VI, the Paschal Full Moon
will be on March 21. That is how 2285 comes to have Easter on March 22.
I came here to continue from a thread, somewhat related to this one,
which was active in March 1991; Google may not have it, but try at
<http://www.cs.rutgers.edu/pub/soc.religion.christian/faq/easter-date>.
I have derived an Easter algorithm, shorter and faster than most,
directly from the prime authorities - in the Book of Common Prayer of
the Church of England, as decreed by the Calendar Act of 1751 - for
Britain and colonies and for Anglicans.
See <http://www.merlyn.demon.co.uk/estrdate.htm>
and <http://www.merlyn.
demon.co.uk/estr-bcp.htm>.
Since the method in the Act, using three main Tables, was designed to
agree exactly with the newish Catholic Easter, and was produced no doubt
with reference to the work of the verbose Clavius, the algorithm is
valid for all Gregorians. Formally, the Act and Book only cover
1600-8599; it was necessary to import the principles of the Lunar
Correction in order to extend the range.
In response to "needles" - no; Julian Easter is much simpler. The
Prayer Book of 1662 has a simple Table indexed by Golden Number and
Sunday Letter; alternatively, the Paschal Full Moon is given by a simple
expression, shown in <http://www.merlyn.demon.co.uk/estr-bcp.htm>.
Julian Easter on the Julian Calendar has the same range as Gregorian :
March 22 to April 25, and the range of Julian Easter on the Gregorian
Calendar will, during 1900-2099, be shifted by +13 days. But I'm not
sure what the Orthodox really do. IMHO.
--
(c) John Stockton, nr London, UK. ?@[EMAIL PROTECTED]
Turnpike
v6.05.
Web <URL:http://www.merlyn.demon.co.uk/>
- w. FAQish topics, links,
acronyms
PAS EXE etc : <URL:http://www.merlyn.demon.co.uk/programs/>
- see
00index.htm
Dates - miscdate.htm moredate.htm js-dates.htm pas-time.htm critdate.htm
etc.
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