What Day Was I Born?

Enter your date of birth to find the day of the week you were born and the weekdays of your next birthdays. For your exact age, use the age calculator.

Date of birth

You were born on a

e.g. May 14, 1990 → Monday

The weekday appears here as you type.

Calculated in your browser. Your date of birth never leaves this device.

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How the day is worked out

The calculator counts the days between your date of birth and a date whose weekday is known, then takes the remainder after dividing by 7. It uses the Gregorian calendar, the one most of the world uses today.

Why your birthday moves each year

A non-leap year is 52 weeks and 1 day long, so your birthday falls one weekday later each year, and two days later after a February 29. May 14 was a Monday in 1990, a Tuesday in 1991, and a Thursday in 1992, because 1992 was a leap year. The birthday countdown shows the weekday of your next one.

Monday's child

A traditional English nursery rhyme from the 19th century gives each weekday a trait. It's folklore, but it's the reason so many people want to know the day they were born:

Born onThe rhyme says
MondayMonday's child is fair of face
TuesdayTuesday's child is full of grace
WednesdayWednesday's child is full of woe
ThursdayThursday's child has far to go
FridayFriday's child is loving and giving
SaturdaySaturday's child works hard for a living
SundayAnd the child that is born on the Sabbath day is bonny and blithe, and good and gay

Frequently asked questions

What day of the week was I born?

Enter your date of birth above and the answer appears instantly. For example, May 14, 1990 was a Monday.

Why does my birthday fall on a different day every year?

A non-leap year has 365 days, which is 52 weeks and 1 day. So each birthday lands one weekday later than the year before, or two days later when a February 29 falls in between.

What does “Monday's child is fair of face” mean?

It's the first line of a traditional English nursery rhyme that gives each day of the week a trait. It's folklore, not a prediction.

Does it work for very old dates?

Yes, back to the year 1000, using the Gregorian calendar we use today. Records made before a country adopted it (1582 in most of Catholic Europe, 1752 in Britain and its colonies) may show a different weekday.