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Seventy should do it. Easter always falls between March 22 and April 25, a 35-day window. Once you've pinned down the day of the week of January 1 (or any oth
by madcaptenor 7y ago
Seventy should do it. Easter always falls between March 22 and April 25, a 35-day window. Once you've pinned down the day of the week of January 1 (or any other day you care about) and whether it's a leap year or not, you have five possibilities for Easter. So there are 7 * 2 * 5 = 70 possible calendars.