How to use the day of the week finder
Choose a calendar date and get its weekday in plain English.
How the calculation works
This uses the proleptic Gregorian calendar for dates supported by the browser. Historical regions adopted the Gregorian calendar on different dates.
Check your inputs carefully: an incorrect date can change a result. Dates and times are entered using your device settings, and no account is needed. For formal, legal, medical or financial purposes, verify the applicable local rules and official records.
Frequently asked questions
Can I check a historical date?
Yes, within the supported date range, using the Gregorian calendar throughout.
Which time zone is used?
Dates use your device’s local calendar day. Date-only calculations avoid daylight-saving day-length errors.
Are the dates I enter uploaded?
No. AgeGlide calculates your results in your browser. Entered dates are not sent to our server for processing.