diamond geezer

 Saturday, March 22, 2008


(eggstreme easter trivia)

The cycle of Easter dates repeats every 5,700,000 years. During this period, Easter falls on March 23rd only 54,150 times (less than 1% of the total).
Today, March 22nd, is the least likely date for Easter to fall - this happens in less than ½% of years. April 19th is the most likely, at nearly 4%.
Easter falls on March 28th in both 2027 and 2032, a gap of five years. No shorter interval is possible.
Almost exactly half of our Easters occur on the same date 11 years later (but never more than four in a row). For example, Easter falls on March 31st in 1991, 2002, 2013 and 2024, but not in 2035.
Consecutive Easters are always separated by 350, 357, 378, or 385 days (that's 50, 51, 54, or 55 weeks). For example, Easter 2008 is 350 days after Easter 2007, but 385 days before Easter 2009. So we've just had the shortest possible gap between Easters, and we're about to enter the longest.
In 1926 the League of Nations proposed that Easter Sunday be observed on the first Sunday after the second Saturday of April (i.e. the Sunday nearest April 12th). However world religions failed to agree on this simplification, and so the movable lunar feast continues.
The last time Easter fell before the clocks went forward was in 1959 (back when the clocks changed to British Summer Time in mid-April, not March).
The coldest recent UK Easter was in 1964. Over the weekend 27-29 March temperatures barely reached 6°C in southern and central parts of the country, and were accompanied by a raw easterly wind.
The snowiest recent UK Easter was in 1983. Over the weekend 1-3 April there was up to 10cm of snowfall in Scotland, the Midlands and Kent. The following Easters were all snowy: 1958, 1965, 1970, 1973, 1975, 1977, 1978, 1982, 1983, 1986, 1994 and 1998.

Here's a table showing the date of Easter from 1900-2099

      01234 56789 |       01234 56789

1900: og0Lc wo1sk | 2000: wo1tk 7ph3L
1910: 7pg3L dwh1t | 2010: dxh1t e7pau
1920: d7pat Ldqh1 | 2020: Ldqi1 te8pa
1930: te7pa uL8qi | 2030: um8qi 5meyj
1940: 4meyi auf8q | 2040: auf9q i5ner
1950: i5mer jauf9 | 2050: jbuf9 rbvn0
1960: qbvn9 rj6nf | 2060: rj6of 9kcvn
1970: 9kbvn 0rj6o | 2070: 0sj6o gskcw
1980: fskcv g0sc6 | 2080: g0sd6 o1tkc
1990: o1skc pg0Ld | 2090: ph0Ld xo1tL

If there's a digit in the table then Easter is in March, and that's the last digit of the date (22nd-31st).
If there's a letter in the table then Easter is in April, and the letter follows the code a=1, b=2, c=3 etc.

» For example, the symbol in the table for 2008 is a digit, so Easter is in March. That digit is a 3, so Easter is on March 23rd.
» For example, the symbol in the table for 2009 is a letter, so Easter is in April. That letter is L, which is the 12th letter of the alphabet, so Easter is on April 12th.

Here's a list of really early Easters, so you can see how rare they really are:
Easter on 22nd March: last happened 1818, next happens 2285
Easter on 23rd March: last happened 1913, next happens 2160
Easter on 24th March: last happened 1940, next happens 2391
Easter on 25th March: last happened 1951, next happens 2035
Easter on 26th March: last happened 1989, next happens 2062
Easter on 27th March: last happened 2005, next happens 2016 (but then not again until 2157)

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