MindPerformanceHacks 2fCalculateAnyWeekday

Hack #43: Calculate Any Weekday

Quickly calculate the day of the week for any date of the Gregorian calendar \x96 useful for scheduling appointments and meetings!

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Page 167 Line 6 erase 'divide the century by 4,' Line 7 replace 'sevens' by 'fours' The example should be.. Thus:

20 mod 4 equals 0 3 - 0 equals 3 2 times 3 equals 6

Hack Author

Ron Hale-Evans

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This is a page for a hack from the book MindPerformanceHacks by Ron Hale-Evans.