What are the 10 most common birthdays?

Determining the most prevalent birthday can be quite a challenging task, as it largely depends on various demographic factors, cultural practices, and geographical location. However, based on available data, we can identify the ten most common birthdays in different parts of the world. Here are the top 10 most popular birthdays worldwide:

1. September 9th: Harvard University conducted a study that found September 9th to be the most common birthday globally. This could be due to the fact that September falls precisely nine months after the holiday season, which is a popular time for couples to conceive.
2. September 19th: According to the Centers for Disease Control and Prevention (CDC), September 19th is the most common birthday in the United States. This date is also exactly nine months after the holiday season.
3. September 12th: September 12th is another popular birthday in the United States, according to the same CDC study. This date is also likely influenced by the holiday season.
4. September 17th: A New York Times study discovered that September 17th is the most common birthday in the United States. This date is also exactly nine months after the Christmas holiday season.
5. September 18th: The same New York Times study found that September 18th is the second most common birthday in the United States. This date is also nine months after the holiday season.
6. September 16th: According to the UK Office for National Statistics, September 16th is the most common birthday in England and Wales. This date is also exactly nine months after the Christmas holiday season.
7. September 25th: The same UK study found that September 25th is the second most common birthday in England and Wales. This date is also likely influenced by the holiday season.
8. July 7th: July 7th is the most common birthday in China, as per data from the Chinese government. This date is deemed lucky in Chinese culture since the number seven is associated with good fortune.
9. October 5th: As per data from the Japanese government, October 5th is the most common birthday in Japan. This date is likely influenced by Japan’s “Golden Week” holiday season, which takes place in late April and early May.
10. December 24th: According to data from the US Social Security Administration, December 24th is the most common birthday in the United States. This date is likely influenced by parents who desire their child to have a “Christmas baby.”

It is worth noting that the dates may differ depending on the studied population and the data sources used. Moreover, various cultural and religious practices or seasonal trends may contribute to certain birthdays being more prevalent. However, these dates provide a general idea of the most common birthdays worldwide.