Date to Day Calculator – Find Day of Week for Any Date
Enter a date (year, month, day) to find which day of the week it falls on. Useful for planning, history, and verifying calendar data.
Date to Day Calculator
Find the day of the week for any date. Enter year, month and day.
How it works
The calculator uses the Gregorian calendar and standard algorithms to compute the weekday. It validates the date (e.g. rejects invalid days like February 30) and returns Sunday (0) through Saturday (6).
Using the date to day calculator
Knowing the day of the week for a given date helps with scheduling, event planning, and historical research. Was your birthday on a weekend? What day did a famous event occur? This calculator answers those questions instantly.
The Gregorian calendar, used in most of the world today, was introduced in 1582. Dates before that may have used the Julian calendar, which had a different leap year rule. For modern dates, the calculator is accurate. Combine it with the date difference calculator to find how many days between two dates, or with the age calculator to compute exact age.