Day of the Week Finder
Find out what day of the week any date falls on. Pick a date and instantly see whether it was (or will be) a Monday, Tuesday, etc. Free and private, right in your browser.
Pick any date. Past, present, or centuries into the future, and instantly see what day of the week it fell or falls on. Handy for checking when your birthday lands next year, verifying a historical date, or settling an argument about what day Christmas was on in 1999.
How to use it
- Enter or pick a date
- View the weekday instantly
- Adjust the date to check others
Frequently asked questions
- How far back or forward can I check?
- The tool uses the proleptic Gregorian calendar, so it can calculate weekdays for any year, including far future dates and dates before 1582 when the Gregorian calendar wasn't yet adopted.
- Does it account for leap years?
- Yes, leap years are calculated automatically using standard Gregorian rules (divisible by 4, except centuries not divisible by 400), so the weekday comes out correct even across February 29ths.
- Is my date data sent anywhere?
- No. The calculation happens entirely in your browser using your device's clock and math, nothing is uploaded or logged.
- 1
Nothing is uploaded
The file never leaves your device. There is no server to send it to, so there is nothing to leak, log, or subpoena.
- 2
No signup, no limits
No account, no email, no daily cap, no watermark, and no paid tier waiting behind the third file.
- 3
Works offline
Load the page once and it keeps working with the network off, because all the work was always happening locally.