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Day of the Week Calculator

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Instantly finds the weekday for the selected calendar date.

Weekday

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How this day of the week calculator works

Choose a date. The page reads the year, month, and day and finds which weekday that calendar date falls on. 7 October 2026 is a Wednesday. 1 January 2000 is a Saturday.

The date is built in your local timezone, on the Gregorian calendar. It is not shifted to UTC, so the weekday is the weekday of that local calendar day. The name in the circle is the long weekday in your browser’s language. The examples below use the English names.

A date is kept only when the year, month, and day still match after it is built. That rejects days the month does not have. 31 April is rejected, because April has 30 days, and the date is not rolled forward into May. 29 February is kept in a leap year and rejected otherwise. 29 February 2024 is a Thursday. 29 February 2023 is not a real date.

Leap years follow the Gregorian rule. A year divisible by 4 is a leap year, except a century year, which must also be divisible by 400. 2000 is a leap year, so 29 February 2000 is a Tuesday. 1900 is not a leap year, and 1 January 1900 is a Monday. An empty field shows --. This page names the weekday of the date you pick. It does not add days, subtract days, or count the gap between two dates.

Weekday examples

Each weekday is the English name for that Gregorian date, using the same date check as the calculator.

DateWeekdayWhat it marks
15 August 1947FridayIndependence Day
26 January 1950ThursdayRepublic Day
1 January 1900Monday1900 was not a leap year
1 January 2000Saturday2000 was a leap year
29 February 2000TuesdayLeap day
29 February 2024ThursdayLeap day
1 January 2024MondayNew Year
7 October 2026WednesdayA midweek date

How to read the result

  • The weekday name

    The circle shows the long name, such as Friday for 15 August 1947.

  • Local calendar day

    The date is your local year, month, and day. No clock time is applied.

  • Real dates only

    31 April and 29 February 2023 are rejected. 29 February 2024 is a Thursday.

  • Leap centuries

    2000 includes 29 February. 1900 does not. 1 January 1900 is a Monday.

Frequently asked questions

  • How does this day of the week calculator work?

    Pick a calendar date. The page builds that year, month, and day as a local date and reads the weekday name. 7 October 2026 is a Wednesday. 1 January 2000 is a Saturday.

  • Which calendar does it use?

    The Gregorian calendar, using your local date rather than a UTC shift. 15 August 1947 is a Friday, and 26 January 1950 is a Thursday.

  • What happens on 29 February?

    29 February is accepted only in a leap year. 29 February 2024 is a Thursday, and 29 February 2000 is a Tuesday. 29 February 2023 is rejected because 2023 is not a leap year.

  • Which years are leap years?

    A year divisible by 4 is a leap year, except a century year, which is a leap year only when it is divisible by 400. 2000 is a leap year. 1900 is not, and 1 January 1900 is a Monday.

  • Why is 31 April rejected?

    April has 30 days. The page checks that the year, month, and day still match after the date is built, so 31 April does not roll into May. The same check rejects 31 June, 31 September, and 31 November.

  • Does this add or subtract days?

    It names the weekday of the date you select. It does not move the date forward or backward, and it does not count the days between two dates.

  • Why might the weekday name differ from an English list?

    The long weekday name follows your browser language. In English, 25 December 2025 is Thursday and 1 January 2024 is Monday. Another language shows that same weekday in its own wording.

  • What does an empty date show?

    Before you pick a date, the weekday is --. After you pick one, the label beside the field shows the date in your local format, and the circle shows the weekday.

  • Does the time of day change the weekday?

    No time is entered. The date is taken as that calendar day in your local timezone, so 1 January 1970 is Thursday for the whole local day.

  • Can I use a date far in the past or future?

    Any date the calendar control accepts is checked the same way. 1 January 1900 is Monday. If the month and day do not exist in that year, the page asks you to choose a valid date.