How to use the weekday finder
- Choose a valid day, month and year.
- Select Calculate.
- Read the weekday at the beginning of the result.
Worked example
8 November 2026 falls on a Sunday. 1 January 2000 fell on a Saturday.
Frequently asked questions
Does the result depend on my location?
No. This tool finds the weekday of a calendar date and does not convert an instant between time zones.
Which calendar is used?
The calculation uses the Gregorian calendar, extended backwards for older dates. It does not model each country’s historical calendar switch.
What years are supported?
You can enter years from 0100 through 9999. Dates such as 30 February are not valid.
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Updated 8 November 2026 · Built-in tools, no signup