How does it know which weekday a date fell on?

It uses the browser's built-in calendar, which follows the proleptic Gregorian calendar, to determine the day of the week for the date you enter — the same arithmetic any modern computer uses.

What is the Monday's Child rhyme?

Monday's Child is a traditional fortune-telling nursery rhyme that assigns a trait to each day of the week — for example, Monday's child is fair of face. The tool shows the line that matches your birth weekday for fun.

How does the rhyme describe each day?

Monday is fair of face, Tuesday full of grace, Wednesday full of woe, Thursday has far to go, Friday loving and giving, Saturday works hard for a living, and the child born on the Sabbath day (Sunday) is bonny and blithe, good and gay.

Can I find the weekday for any date, not just my birthday?

Yes. It works for any date in the past or future — an anniversary, a historical event, or a future deadline — returning the correct day of the week each time.

Is the weekday accurate for very old dates?

It uses the proleptic Gregorian calendar, which extends today's calendar backwards uniformly. For dates before countries adopted the Gregorian calendar (1582 onward in much of Europe), the historical day of the week recorded at the time may differ.

Why do people care which day they were born?

It is mostly for fun and curiosity, tied to the Monday's Child rhyme and folklore that links birth days to personality traits. There is no scientific basis to the traits.

Is my birth date uploaded?

No. The weekday is computed locally in your browser, so your date of birth is never sent anywhere.

What Day Was I Born — Gera Tools

What day of the week were you born?

Enter your date of birth and this tool reveals which day of the week you were born on — Monday, Tuesday, and so on — then shares the matching line from the traditional Monday’s Child nursery rhyme for a bit of fun. It works for any date, so you can also check anniversaries, historical events, or future dates.

How it works

The tool reads the date you pick and asks your browser’s built-in calendar for its weekday. Browsers follow the proleptic Gregorian calendar, the same arithmetic every modern computer uses, so the result is exact for any recent date. It then looks up that weekday in the Monday’s Child rhyme and displays the corresponding line.

Weekday	Monday’s Child line
Monday	Fair of face
Tuesday	Full of grace
Wednesday	Full of woe
Thursday	Has far to go
Friday	Loving and giving
Saturday	Works hard for a living
Sunday	Bonny, blithe, good and gay

Example

Someone born on 15 June 1990 finds it was a Friday, so their rhyme line is “Friday’s child is loving and giving.”

The calculation happens entirely on your device, and nothing is uploaded.