How to use the Day of Week Finder
Choose any date and the tool tells you whether it falls on a Monday, Tuesday or any other day.
Handy uses
People use this to find the weekday they were born, to check what day a birthday or holiday lands on next year, or to confirm a deadline before writing it in an email. For example, 1 January 2000 was a Saturday and 1 January 2026 was a Thursday.
Why the weekday shifts each year
A normal year has 365 days, which is 52 weeks and one day, so a date moves forward one weekday each year. After 29 February in a leap year it jumps two. That is why your birthday drifts through the week and returns to the same weekday only every 5, 6 or 11 years.
How it works
Read weekday from the UTC calendar date.
Examples
- 9 November 2026
Monday
- 1 January 2000
Saturday
- 25 December 2026
Friday
Limitations and assumptions
Uses the modern Gregorian calendar for every date. Very old historical dates recorded under the Julian calendar can differ.
Frequently asked questions
How is the weekday worked out?
From the calendar date using the Gregorian calendar.
Does it work for old dates?
It uses the proleptic Gregorian calendar, so dates before 1582 may differ from historical records.
How do I find the week number?
Use the week number calculator.
How many days between two dates?
Use the date difference calculator.