Did you know that according to the “birthday paradox,” in any group of 23 people, there is a 50% chance at least two people will share a birthday? While this may or may not be accurate, some days of the year are more likely than others. Surprisingly, the most common birth date of the year is September 9th.
However, if September 9th is the most common day, it begs the question of which dates are the rarest? Thanks to data from the Center for Disease Control and Social Security Administration, we know exactly which days are the rarest in descending order based on US birth data from 1994 to 2014.
25. January 8
![January 8, Cover natural background, white wooden Calendar cube with a pot flower on white background.](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-2186172969-huge-licensed-scaled-1200x794.jpg)
On January 8, 1790, George Washington delivered the first State of the Union address.
24. February 13
![Cube shape calendar for February 13 on wooden surface with empty space for text.](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-559915120-huge-licensed-scaled-1200x773.jpg)
Celebs born on February 13 include Kelly Hu, Henry Rollins, Neal McDonough, and Michael Jackson Jr.
23. January 29
![Letter dice in front of a keyboard - January 29](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-2233971187-huge-licensed-scaled-1200x666.jpg)
On this day in 1959, Disney’s “Sleeping Beauty” was released in theaters.
22. January 15
![Winter composition. White wooden calendar cubes. Data January 15. Cup of cocoa, marshmallows and decorative branch with red berries on blue background Top view Flat lay Copy space](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-1214663497-huge-licensed-scaled-1200x799.jpg)
Celebrities born on this day include Regina King, Dove Cameron, Pitbull, Drew Brees, and Martin Luther King Jr.
21. January 13
![Wood blocks in box with date, day and month 13 January. Wooden blocks calendar](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-1200655600-huge-licensed-scaled-1200x800.jpg)
January 13 was the first time a Walt Disney Mickey Mouse comic strip was published.
20. July 5
![July 5 calendar date text on wooden blocks with blurred background park. Copy space and calendar concept](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-2183839641-huge-licensed-scaled-1200x797.jpg)
Anyone born on July 5 also shares a birthday with Shohei Otani, Edie Falco, Megan Rapinoe, and RZA.
19. May 26
![May 26 calendar date text on wooden blocks with blurred nature background. Copy space and calendar concept](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-2294650741-huge-licensed-scaled-1200x721.jpg)
On May 26, 1969, Apollo 10 returned to Earth, completing the necessary mission steps for a Moon landing.
18. December 31
![Wooden calendar with December 31 date and beautiful Christmas decoration on dark textured background with copy space.](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-2349200749-huge-licensed-scaled-1200x799.jpg)
Anyone born on this day celebrates their birthday and New Year’s Eve on the same day.
17. April 13
![April calendar and toy home. Day 13 of month. Card message for print or remember](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-1659057268-huge-licensed-scaled-1200x651.jpg)
On April 13, 1796, the United States welcomed the first elephant to the newly formed country.
16. December 23
![December 23, Calendar design with Christmas tree on red table background.](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-2083340818-huge-licensed-scaled-1200x794.jpg)
History was made on this day in 1986 when the first aircraft successfully flew worldwide without stopping.
15. April 1
![April 1st. Image of april 1 wooden calendar and festive decor on the pink background. April Fool's Day.](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-2270569713-huge-licensed-scaled-1200x800.jpg)
If you’re born on April 1, you’ll always have to compete with many April Fools jokes.
14. November 28
![Vintage photo, November 28th. Date of 28 November on wooden cube calendar, copy space for text on board](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-2065610684-huge-licensed-scaled-1200x746.jpg)
November 28 is a popular celebrity birthday for John Stewart, Mary Elizabeth Winstead, Ed Harris, and Judd Nelson.
13. November 26
![November 26. 26th day of the month, wooden calendar isolated on a white background with shadow.](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-2380355903-huge-licensed-scaled-1200x800.jpg)
Sharing your birthday on November 26 will be Jessica Camacho, Natasha Bedingfield, and Peter Facinelli.
12. November 24
![Save the Date written on a calendar - November 24](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-492440788-huge-licensed-scaled-1200x801.jpg)
On this day in 1967, the first Chick-fil-A restaurant opened in an Atlanta mall.
11. October 31
![Happy Halloween day with Jack O lantern pumpkin and 31 October calendar. Trick or Threat, Hello October, fall autumn, Festive, party and holiday concept](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-2206434979-huge-licensed-scaled-1200x800.jpg)
Along with Halloween, October 31st also marks Mount Rushmore’s completion in 1941.
10. November 25
![November 25 Calendar on neon effects background blue and red neon lights. Day, month November Calendar on bricks background Neon Sign Light Red Blue](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-1989653741-huge-licensed-scaled-1200x674.jpg)
Anyone born on November 25th will share a birthday with Ben Stein, Christina Applegate, and Amy Grant.
9. November 23
![November 23 calendar date text on wooden blocks with copy space for ideas or text. Copy space and calendar concept](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-2181256113-huge-licensed-scaled-1200x797.jpg)
On this day in 1963, President Lyndon Johnson had his first full day in office after President Kennedy’s assassination.
8. November 27
![November 27th. Day 27 of month, calendar on author workplace background. Autumn concept. Empty space for text](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-461481811-huge-licensed-scaled-1200x797.jpg)
If you are born on November 27th, you share your birthday with Bill Nye the Science Guy.
7. December 26
![December 26 Boxing Day calendar](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-2225221237-huge-licensed-scaled-1200x799.jpg)
On December 26, 1941, President Roosevelt declared the fourth Thursday of every November as Thanksgiving Day.
6. January 2
![January 2, Date design with calendar cube on wooden table and white background.](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-2124985796-huge-licensed-scaled-1200x794.jpg)
On this day, John F. Kennedy gave his first speech announcing his run for the US Presidency.
5. July 4
![4th of july Wooden calendar and american flags for memorial day or veteran's day background](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-668645401-huge-licensed-scaled-1200x718.jpg)
Surprisingly, the day America celebrates its independence is one of the least popular for births.
4. December 24
![December 24 - Christmas Eve. Wooden block calendar and festive decor on grey table](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-2053757171-huge-licensed-scaled-1200x800.jpg)
If you were born on this date, you are not alone. Louis Tomlinson, Mark Valley, and Anil Kapoor were also born on December 24th.
3. January 1
![Calendar 1st january with spider plant against white wall](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-2218678465-huge-licensed-scaled-1200x800.jpg)
Like Christmas, New Year’s Day is unsurprisingly another rare day to be born.
2. December 25
![December 25, Vintage natural calendar design with number cube.](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-1613922085-huge-licensed-scaled-1200x794.jpg)
It doesn’t seem surprising that one of the most religious and important days of the year is also one of the rarest for birthdays.
1. February 29
![Leap Year Day, February 29, displayed on a wooden block calendar](https://history-computer.com/wp-content/uploads/2024/06/shutterstock-2400007883-huge-licensed-scaled-1200x800.jpg)
Unsurprisingly, a day that only happens once every four years is the rarest date to be born.
The image featured at the top of this post is ©Ruth Black/Shutterstock.com.