doomsday
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| doomsday [2023-04-19 05:47] – [Monthly doomsdays] root | doomsday [2023-04-20 12:06] (current) – root | ||
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| It's a nifty parlor trick, a decent mental exercise, and takes about as much skill as learning to solve a Rubik' | It's a nifty parlor trick, a decent mental exercise, and takes about as much skill as learning to solve a Rubik' | ||
| - | ==== Monthly doomsdays ==== | + | ===== Monthly doomsdays |
| The monthly doomsdays (after February) are trivial to remember: they fall on the same day as the month' | The monthly doomsdays (after February) are trivial to remember: they fall on the same day as the month' | ||
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| Can you figure out this year's doomsday if you know the current date and day of the week? Try calculating other dates this year and consult a calendar to see whether it works out. | Can you figure out this year's doomsday if you know the current date and day of the week? Try calculating other dates this year and consult a calendar to see whether it works out. | ||
| - | ==== Yearly doomsdays ==== | + | ===== Yearly doomsdays |
| Given the last exercise, with enough practice, calculating days of the week should be fairly trivial after you learn a year's doomsday. But what about doomsdays for other years? A simple algorithm was developed for this. The century doomsday of this century is **Tuesday** . This algorithm is based around the decade and digit years, eg for dates 2000 - 2099: | Given the last exercise, with enough practice, calculating days of the week should be fairly trivial after you learn a year's doomsday. But what about doomsdays for other years? A simple algorithm was developed for this. The century doomsday of this century is **Tuesday** . This algorithm is based around the decade and digit years, eg for dates 2000 - 2099: | ||
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| Tuesday + 3 = Friday. Lo and behold, Friday is the doomsday of 2036. | Tuesday + 3 = Friday. Lo and behold, Friday is the doomsday of 2036. | ||
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doomsday.1681883240.txt.gz · Last modified: 2023-04-19 05:47 by root