The rarity of a birthday depends on the day of the year and the region. Generally:
- The rarest birthday is February 29, occurring only in leap years, with about a 1 in 1,461 chance due to happening every four years.
- Other less common birthdays include major holidays like December 25 (Christmas), January 1 (New Year's Day), and December 24 and 26, due to fewer births scheduled on holidays.
- September is typically the most common birth month with September 26 being among the most common birth dates, as more babies tend to be conceived around Christmas.
- Birthdays around major holidays and some specific dates like July 4 or late November days tend to be less common.
- Birth frequency varies by country, for example in the UK, September is the month with the highest birthday frequency while December has a lower frequency overall.
If you provide your exact birthday, a more precise rarity percentage or comparison can be given based on this statistical data.
