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Ingy döt Net 2023-07-01 11:58:00 -04:00
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F isleap(year)
R year % 4 == 0 & (year % 100 != 0 | year % 400 == 0)
F weekday(year, month, day)
V days = [‘Sunday’, ‘Monday’, ‘Tuesday’,
‘Wednesday’, ‘Thursday’, ‘Friday’, ‘Saturday’]
V dooms = [[3, 7, 7, 4, 2, 6, 4, 1, 5, 3, 7, 5],
[4, 1, 7, 4, 2, 6, 4, 1, 5, 3, 7, 5]]
V c = year I/ 100
V r = year % 100
V s = r I/ 12
V t = r % 12
V c_anchor = (5 * (c % 4) + 2) % 7
V doomsday = (s + t + (t I/ 4) + c_anchor) % 7
V anchorday = dooms[isleap(year)][month - 1]
V weekday = (doomsday + day - anchorday + 7) % 7
R days[weekday]
L(year, month, day) [(1800, 1, 6), (1875, 3, 29), (1915, 12, 7),
(1970, 12, 23), (2043, 5, 14), (2077, 2, 12), (2101, 4, 2)]
print(‘#.-#02-#02 -> #.’.format(year, month, day, weekday(year, month, day)))