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Day of Week Calculator: It used to be that finding the day of week for an old date was complicated and time-consuming, but not now! We take into account many historical complications.
Number of days between two dates: Calculate the number of days between any two dates. Also shows total hours, minutes, and seconds. Now includes several additional methods of day counting including 30/360.
Add or subtract years, months, and days from a date: This one is good for researching old gravestones that sometimes say something like "Lived 38 years, 2 months, and 5 days". This calculator will allow you to determine the date of birth.
Add or subtract a number of days from a date: Yep, we do that too!
Like Years or What years does date land on a ____?: Does your birthday land on a Thursday this year? Ever wonder when it will land on a Thursday again?
Convert a Date: Convert dates to and from many different calendars systems including Gregorian, Julian, Julian Day, Hebrew, Islamic, Persian, Kurdish, Afghan, Mayan, Bahá'í, Indian, French Republican, and more.