Leap years happen every four years. They help keep our calendar in sync with the Earth’s journey around the Sun, which takes about 365.25 days.

Impact on Birthdays:

• People born on February 29 only get to celebrate their real birthday every four years.
• In the years without a leap day, they might celebrate on February 28 or March 1.
• As of 2023, around 5 million people around the world celebrate their birthday on February 29.

Impact on Anniversaries:

• Couples who got married on February 29 also celebrate their anniversary every four years.
• Like those with February 29 birthdays, they often choose to celebrate on February 28 or March 1 during non-leap years.

Statistics:

• Leap years, like 2020, happen in years that can be divided evenly by 4, except for years at the end of a century that aren’t divisible by 400.
• This means there are usually 97 leap years in a cycle of 400 years.

Overall, leap years add an interesting twist to how we celebrate birthdays and anniversaries!