3 ms·
It's handy to know if some date is a weekend or not. Or some specific day of the week where you're generally busy. Or to check where Christmas falls or somethi
by benj111 3y ago
It's handy to know if some date is a weekend or not. Or some specific day of the week where you're generally busy.
Or to check where Christmas falls or something like that.
Ultimately it's a little thing to keep in your wallet. Not something to replace an appointment diary.
- KMnO4 3y agoCheck out the Doomsday Rule. https://en.wikipedia.org/wiki/Doomsday_rule https://en.wikipedia.org/wiki/Doomsday_rule I learned this years ago and it is life changing. It can be used to figure out the day of the week of any day in a couple seconds. For example, the rule immediately tells me that Boxing Day is a Tuesday[0], so I know Christmas falls on a Monday this year. [0] as does 3/14, 4/4, 5/9, 6/6, 7/4, 7/11, 8/8, 9/5, 10/10, 10/31, 11/7, and 12/12 since those anchor points are always on the same “doomsday”. Based on that, any day is just a little bit of addition/subtraction.