Date
Day of the Week Finder
Find which day of the week any date falls on, past or future, with its week number and day of the year.
How to find the day of the week
- Pick any date, from year 1 to far in the future.
- Press Find the day.
- See the weekday, ISO week number, day of the year and more.
- Dates use the Gregorian calendar throughout, as most software does.
- Want to know a date a set number of days away? Use Add / Subtract Days.
Day of the Week Finder: frequently asked questions
What day of the week was I born on?
Enter your date of birth and press Find the day. You'll also see which weekday your birthday falls on in each of the next five years.
What day was 15 August 1947?
India's Independence Day, 15 August 1947, was a Friday. Use the "Indian Independence" example link to see the details.
What is the ISO week number?
ISO 8601 weeks start on Monday, and week 1 is the week with the year's first Thursday. So 1 January can fall in week 52 or 53 of the previous year.
How far back does it work?
Any date from year 1 onwards, using the Gregorian calendar throughout, as computers and most date tools do.