How to use the Day of the Week Finder
- Pick any date.
- Read the day of the week, the day of the year and the week number.
What does this tool do?
The calculator uses the Gregorian calendar, which most of the world uses today. Ask it what day you were born, when a holiday falls next year, or the weekday of a historic event.
Why use it?
- Find the day you were born.
- Plan events years ahead.
- Settle trivia debates.
Example
January 1, 2000 was a Saturday. July 4, 1776 was a Thursday.
Accuracy and limits
- Dates before the Gregorian calendar was adopted (1582 in much of Europe, 1752 in Britain and its colonies) are shown in the extended Gregorian calendar, which may differ from records of the time.
Privacy
The calculation happens instantly in your browser. The numbers you enter are not sent to our servers or saved. There's no account to create and nothing to install.
Frequently asked questions
Does it work for historical dates?
Dates are calculated on the Gregorian calendar extended backwards. Before 1582 — and until 1752 in Britain and its colonies — the Julian calendar was used, so dates recorded at the time can differ by 10–11 days.
How can I work out the weekday in my head?
Methods like the Doomsday rule let you do it with practice: certain easy dates (4/4, 6/6, 8/8, 10/10, 12/12) always fall on the same weekday within a year. The calculator is quicker for everyday use.
Last reviewed by the M2Toolkit team.