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The First Sunday Doomsday Algorithm is the simplest way to calculate the day of the week for any date in your head. http://firstsundaydoomsday.blogspot.com htt
by bumbledraven 11y ago
The First Sunday Doomsday Algorithm is the simplest way to calculate the day of the week for any date in your head.
http://firstsundaydoomsday.blogspot.com http://firstsundaydoomsday.blogspot.com
It brings together a bunch of great mnemonics, like the new "odd+11" rule for calculating the 2-digit year code, as well as Conway's classic "I work 9-5 at the 7-11" for the month code.