What are some fun facts about birthdays?

Some fun facts about birthdays include the fact that before the 19th Century, dates of birth rarely were recorded and that Queen Elizabeth II of England was born on April 21st but her official birthday is celebrated on a Saturday in June to ensure good weather.

Another fun fact about birthdays is that in some countries, people celebrate name days in addition to the anniversary of their birth. Originally, name days were celebrated on the feast day of the saint after whom the person was named, but many countries now have an extra day set aside for people who aren't named after any saint.