Day of the Week
Which weekday does a date fall on?
Day of the Week — What Day Does Any Date Fall On?
The weekday of any date, past or future — plus the day of the year
Pick any date and instantly see which day of the week it falls on — whether it's the day you were born, a historical date or a future appointment. The tool works for any year, so "what day was I born?" and "what weekday is New Year 2030?" are both one tap away. Alongside the weekday you also get the day of the year (1–366), how many days remain in that year, the ISO week number and whether the year is a leap year. Everything runs free in your browser.
Features
Any Date
Past or future — birthdays, historical dates, appointments
Birthday Weekday
Find out what day of the week you were born
Day of Year
See the date's number in the year (1–366) and the days left
Extras
ISO week number and leap-year check included
Quick Facts
Popular questions
- What day of the week was I born?
- What weekday is January 1 next year?
- What day does my birthday fall on this year?
- What day of the year is today?
Good to know
- A normal year has 365 days, a leap year 366
- Leap years: divisible by 4, except centuries not divisible by 400
- Your birthday weekday shifts 1 day per year, 2 after a leap day
- The same calendar repeats every 28 years (usually)
Frequently Asked Questions
How do I find what day of the week I was born?
Enter your birth date — the weekday appears instantly, along with the day of the year and whether your birth year was a leap year.
Does it work for future dates?
Yes. Pick any future date to see its weekday — handy for planning weddings, events and deadlines years ahead.
What is the day of the year?
The date's ordinal number within its year: January 1 is day 1, and December 31 is day 365 — or 366 in a leap year.
Why does my birthday fall on a different weekday each year?
Because 365 days = 52 weeks + 1 day, the weekday advances one day each year — and two days when a February 29 falls in between.
Is it free, and does it work on my phone?
Yes. It's completely free with no sign-up and works in your browser on desktop, tablet and phone.