Day You Were Born
Enter your date of birth and find out which day of the week you arrived on. Includes the traditional ruling planet and personality traits for each day of the week - a bit of fun astrology trivia.
How to use
- Enter your full date of birth.
- Instantly see the day of the week you were born.
- Discover your birth day's traits and ruling planet.
Related tools:
Enter your date of birth and this tool tells you exactly which day of the week you arrived in the world. Beyond the day itself, you get the traditional ruling planet for that day and personality traits historically associated with people born on it. It is a piece of trivia most people have never checked.
The day-of-week calculation uses a mathematical formula applied to the date, which is why it works accurately for any date in history regardless of how far back you go. The personality associations come from ancient traditions linking each weekday to a celestial body, a practice that goes back to Roman and earlier cultures, which is also where our weekday names originate.
Frequently Asked Questions
How accurate is the day-of-week calculation?
It is mathematically exact. The formula accounts for leap years and calendar rules, so the result is correct for any date in the Gregorian calendar.
Are the personality traits scientific?
No, they are based on traditional and folkloric associations rather than psychology research. Think of them as cultural trivia rather than a personality test.
Can I check a date before I was born?
Yes. Enter any date to find the day of the week, making this useful for historical dates, anniversaries, or events.
Why are weekdays named after planets?
The seven classical planets each got a day in the Roman calendar system. Those names survived through Latin and Germanic languages into modern English weekday names.