Day of the Week Finder
Find what day of the week any date fell — or will fall — on.
Last updated
How to find the day of the week for a date
- Pick any date, past or future.
- The day of the week appears straight away.
About this tool
The Gregorian calendar repeats its weekday pattern on a 400-year cycle, so this works the same way for a date centuries in the past or future as it does for next week — there's no special-casing, just calendar-day arithmetic done consistently with UTC dates so the result doesn't depend on your time zone.
Nothing entered here is sent to a server — the entire calculation runs as JavaScript in your browser tab.
Questions about days of the week
What day of the week was I born on?
Enter your date of birth to find out. It works for any date in the Gregorian calendar.
What day was 1 January 2000?
A Saturday. Try any other date, such as a wedding day or a historic event.
Do dates fall on the same weekday every year?
No. A date moves on by one weekday each year, or two after 29 February. The whole pattern repeats every 400 years.
Does it work for dates far in the future?
Yes. The calculation is the same for next week, the year 2100 or centuries back, and doesn’t depend on your time zone.