How common is a March 21 birthday?
March 21 ranks 149th out of 366 days, averaging 11,233U.S. births per day between 1994 and 2014 — that's 59.5% more common than the rest of the calendar. More babies arrive on your day than on a typical day of the year.
- Rank
- 149th / 366
- Avg. daily births
- 11,233
- More common than
- 59.5% of days
- Zodiac
- Aries
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March 21 ranks 149th out of 366 days, with an average of 11,233 births per day. More babies arrive on your day than on a typical day of the year.
Based on a typical 40-week pregnancy, you were likely conceived around June 15.
The days around it
Famous people born on Mar 21
- Gary Oldman · b. 1958actor
- Ayrton Senna · b. 1960F1 legend
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Classic
Where Mar 21 sits on the calendar
Jan
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Every cell is one day of the year — yours is outlined.
More about March 21
- Roughly 235,893 people across the U.S. share this exact birthday, based on 21 years of records.
- Babies born on this date were most likely conceived around June 15.
- This is day 81 of the year — 149th out of 366 for birth frequency.
- The sign is Aries, one of the twelve zodiac signs tracked across the full calendar.