What Day of the Week Was I Born

Ever wondered whether you were born on a Monday or a Saturday? Enter your date of birth and this calculator reveals the exact day of the week you arrived on — instantly, for any birth year.

There is a long tradition of attaching meaning to your birth weekday. The old nursery rhyme Monday's Child assigns a trait to each day, and in many cultures the day of birth carries its own significance. Whatever you make of that, the weekday is a small, fixed fact about the day you were born, and it can be a fun detail to share with family or add to a birthday card, scrapbook, or milestone post.

The calculator handles every date correctly, including birthdays in leap years and dates well before 1970 — so it works just as well for grandparents as for newborns. Because the day is computed in a timezone-safe way, the result is stable and repeatable: the same date of birth always returns the same weekday.

To use it, choose your date of birth and press Find the day. The weekday appears immediately, with a note about whether it was a weekday or the weekend. If you want to explore further, the day of the week calculator does the same for any date, and the age calculator turns your date of birth into your exact age in years, months, and days.

Parents often look this up for a newborn to record on a keepsake; adults look it up out of curiosity or to settle a family debate about which day someone was actually born.

Your date of birth is anchored at midnight UTC and its weekday read directly from the Gregorian calendar. Leap years are included automatically, so a 29 February birthday returns the correct day just like any other date.