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Calculate the day of the week for any date in your head
The Doomsday Algorithm gives the day of the week for any date (and you can do it in your head)
Rudy Limeback's personal web site, RUDY.CA
Visit rudy.ca → On Hacker News Jan 2020 – Jan 2020
The Doomsday Algorithm gives the day of the week for any date (and you can do it in your head)