Re:Calculate the day of the week for any date in your head
by aliceryhl on Wednesday January 01, 2020 @09:56AM
(#21928247)
I think the idea behind this algorithm is that you have to remember one anchor date in the current year, and then you can find all other days in the same year.
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Re:Calculate the day of the week for any date in your head
by Areading314 on Sunday January 05, 2020 @11:56AM
(#21962180)
It later goes to explain a method to derive annual doomsdays based on a century-doomsday