Day of the Week Calculator

Find out what day of the week any date falls on

About the Day of the Week Calculator

This calculator determines which day of the week a given date falls on. Whether you want to know the weekday of a historical event, your birth date, or a future appointment, simply enter the date and get an instant answer.

How It Works

  • Enter any date using the date picker
  • The calculator reads the date in Coordinated Universal Time (UTC)
  • It returns the corresponding weekday name
  • The day number of the year is also shown for reference

Common Uses

  • Find the weekday of a birthday or anniversary
  • Plan events and schedule appointments
  • Verify the day of a historical date
  • Check what day a future deadline lands on

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Note: This calculator determines the day of the week based on the proleptic Gregorian calendar using UTC. Results are accurate for dates after the calendar's adoption.

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