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Date & time

Day of the week calculator

Find the day of the week for a date in the Gregorian calendar.

Free & no registration Calculated in your browser
01

Your inputs

The starting values are an example.

Decimals: 12.5 · Thousands: 1,234.56. Follow the field instructions for lists.

02

Your result

Enter your values and select Calculate.

Your calculation will appear here.

Your result will include the relevant values and units.

Understand the calculation

Formula and example

How it is calculated

The weekday is determined from the Gregorian calendar date.

Worked example

1 January 2000 was a Saturday.

Things to check

  • The Gregorian calendar is applied to earlier dates as well. Historical regional calendar changes are excluded.