What Day Will I Turn 21?
Discover the exact date and day of the week of your 21st birthday. In the US, this is when you can legally drink — find out when yours falls!
About the 21st Birthday Calculator
Your 21st birthday is a milestone celebration, especially in the United States where it marks the legal drinking age. Many people plan big parties for this occasion.
Use this calculator to find out what day of the week your 21st birthday falls on — perfect for planning that unforgettable celebration!
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Frequently Asked Questions
How is my 21st birthday calculated?
We add 21 years to your birth date. For leap day birthdays (Feb 29), your 21st birthday would be Feb 28 or March 1 in non-leap years.
Why is turning 21 significant?
In the United States, 21 is the legal drinking age. It's also considered a major milestone into full adulthood in many cultures.
What if I'm already over 21?
The calculator will show you the date and day of the week when you turned 21 — a fun trip down memory lane!
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