What Day of the Week Was It
Find out which weekday any date falls on, plus its day number and week number in the year. Free, no signup.
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Frequently Asked Questions
- Can I look up a historical date?
- Yes. Any date works, past or future, as long as it is within the browser's supported range.
- How is the week number calculated?
- The day of year is divided by seven and rounded up, which matches the simple week numbering used on most calendars.