By the numbers

Which birthday has the most famous people?

February 2133 famous birthdays
16on an average day

Within chance

33 people, about twice an average day: a lucky day rather than a law. March 8 is the quietest, with 5.

Who shares your birthday?

The ten busiest birthdays

Spread the same people across the year at random and a day as busy as February 21 turns up about one time in 16. Each goes to everyone born that day, with the day’s Sun sign.

  1. 1February 21Pisces33
  2. 2March 26Aries28
  3. 3May 8Taurus27
  4. 4August 17Leo26
  5. 5January 6Capricorn25
  6. 6June 21Gemini or Cancer25
  7. 7September 25Libra25
  8. 8November 22Scorpio or Sagittarius25
  9. 9November 30Sagittarius25
  10. 10January 17Capricorn24

And the quietest

February 29 has 6, where a day that comes once in four years would expect 4.

Month by month

Each month against its share of the year’s days. The spread is within what chance gives: no month makes more famous people than its length would.

Counted Its share of the year
  1. January503, chance gives 504.487
  2. February490, chance gives 459.734
  3. March514, chance gives 504.487
  4. April481, chance gives 488.214
  5. May486, chance gives 504.487
  6. June498, chance gives 488.214
  7. July516, chance gives 504.487
  8. August496, chance gives 504.487
  9. September513, chance gives 488.214
  10. October500, chance gives 504.487
  11. November482, chance gives 488.214
  12. December465, chance gives 504.487

How it was counted

5,944 famous people with a page on this site, each counted on the day of the year they were born. The baseline is an even spread, February 29 counted as a quarter of a day. Real births are not quite even (more fall in late summer in many countries), which this does not allow for.

How unusual the busiest day is: each day’s count is set as chance would give it around the average day, and the question asked is how often a whole year of 365 such days has one as busy.

To cite this page: Which birthday has the most famous people?, Under Your Stars, https://underyourstars.com/numbers/famous-birthdays

Who was born on your day?

Every day of the year, with the famous people born on it and the day's Sun sign.