๐
Date & Time
Day of the Week Calculator
The weekday of a date follows a fixed cycle that shifts by one day each year and by two across a leap year. This works for any date in the Gregorian calendar.
How it works
Date
Weekday number (0 = Sunday)
Day of the year
Days in the year
Days remaining in the year
Frequently asked questions
How do I use the Day of the Week Calculator?
Fill in the fields above โ the result recalculates instantly as you type. Everything runs in your browser, so the values you enter are never collected or stored.
Is this calculator free?
Yes. It is completely free, requires no account, and works on phones, tablets and desktops.