Day of Week Calculator
Find the day of the week for any date. Instantly see if your birthday, anniversary, or any date falls on a Monday, Friday, or any other day.
Result
Day of week:
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Day of Week Tips
How is it calculated?
The day of the week is determined by the date using the Gregorian calendar. Leap years are automatically handled.
ISO Week
ISO weeks start on Monday (1) and end on Sunday (7).
Fun Fact
January 1, 2000 was a Saturday!