Determining the exact top 20 rarest birthdays requires extensive birth data analysis across various populations and years. However, we can deduce some of the least common based on factors like leap years and holiday proximity. The provided data gives a partial glimpse of this.
Understanding Rarity in Birthdays
The rarity of a birthday is influenced by several factors:
- Leap Years: February 29th is inherently rare, occurring only every four years.
- Holidays: Birthdays close to major holidays (like Christmas or New Year's) tend to be slightly less common due to potential factors influencing conception timing.
- Day of the Week: Some studies suggest slight variations in birth rates based on the day of the week. This effect is less significant than leap years and holidays.
Partially Determined Least Common Birthdays
Based on the reference data alone, we can partially infer some of the least common birthdays:
- February 29th: This leap day birthday is the rarest.
- December 25th: Christmas Day is likely less frequent due to holiday-related factors.
- January 1st: New Year's Day may also see fewer births for similar reasons as Christmas.
- December 24th: Christmas Eve falls close to Christmas, making it potentially less frequent.
The remaining birthdays listed (July 4th, January 2nd, December 26th, November 27th etc.) are also likely less common than average birthdays, but determining a precise ranking among them or completing the top 20 requires more comprehensive data.
The provided link (https://www.happiestbaby.com/blogs/baby/most-common-birthdays) offers further insight into common birthdays, but doesn't provide a list of the rarest. To ascertain the complete top 20 rarest birthdays, a large-scale statistical analysis of birth records would be necessary.
