A complete revolution of the sun (a year) takes approximately 365 days and 5 hours, 49 minutes and 16 seconds. This means that extra time accumulates every year and has led to the inclusion of an extra day every 4 years. However, 4 years of 5 hour, 49 minute and 16 second sun revolutions does not equal 24 hours, so an end-of-the-century year is not a leap year unless it is divisible by 400. (2000 was a leap year, 1900 was not)*
Do you know anyone who was born on February 29th? My partner’s Dad was and today is his 16th/64th birthday.
*Information found on Wikipedia