Day of the Week Finder
Find the day of the week for any date
About the Day of the Week Finder
The Day of the Week Finder tells you which weekday any date falls on, past or future. Find out what day you were born, or when a future holiday or deadline lands.
How it works
The date is turned into a calendar timestamp and the weekday is read directly from it, using the proleptic Gregorian calendar that browsers use. It gives the same answer as hand methods like Zeller's congruence.
How to Use Day of the Week Finder
Enter Your Data
Pick any date.
Run the Tool
Press Find Day.
Use the Result
Read the weekday.
Why Use Our Day of the Week Finder?
100% Free
No registration, no hidden fees, no limits — ever.
Privacy First
All processing runs in your browser. Your data never leaves your device.
Mobile Friendly
Works perfectly on phones, tablets, and desktops.
Instant Results
Results appear as soon as you run the tool.
Frequently Asked Questions
Q. Does it work for very old dates?
It uses the Gregorian calendar for all dates. Countries switched from the Julian calendar at different times (Britain in 1752, Russia in 1918), so historical documents from before those dates may show a different weekday.
Q. What day of the week was January 1, 2000?
A Saturday. Try it in the tool.
Q. Why do calendars repeat?
The Gregorian calendar repeats exactly every 400 years. Individual years often reuse an earlier year's calendar after 6, 11 or 28 years.