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Day of Week Calculator

Estimator

Find the day of the week for any date in history or the future.

Date

About This Tool

The Gregorian calendar was adopted in 1582 to correct the Julian calendar's drift. The algorithm for day-of-week calculation (Zeller's congruence or Doomsday) can determine any day in the Gregorian calendar from 1582 to well beyond 9999.

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