Day of the Week Calculator
Enter any date to see which day of the week it falls on, whether it is in the past or future. The tool also tells you if the date lands on a weekend.
How to find the day of the week
- Pick the date you want to check.
- Read the weekday name, from Monday through Sunday.
- See whether the date is a weekday or a weekend.
Examples
The start of 2000
2000-01-01
Saturday (weekend)
A future date
2026-06-10
Wednesday (weekday)
Frequently asked questions
How does the calculator work out the weekday?
It computes the day of the week directly from the calendar date using UTC, so the result is exact and never shifts with time zones.
Can it tell me the day for a date far in the past?
Yes. The proleptic Gregorian calendar is used, so historical and future dates both return a correct weekday.
What counts as a weekend?
Saturday and Sunday are treated as the weekend. Every other day is reported as a weekday.
Why did I get an error?
The date must be a real calendar date in YYYY-MM-DD form. Values like February 30 or month 13 are rejected.
Is my data private?
Yes. The calculation runs in your browser and nothing is uploaded.
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