- Although the modern calendar counts a year as 365 days, a complete revolution around the sun takes approximately 365 days and 6 hours. Every four years, an extra twenty-four hours have accumulated, so one extra day is added to that calendar to keep the count coordinated with the sun's apparent position.
- Every year that is divisible by four is a leap year. However, of those years, if it can be divided by 100, it is NOT a leap year unless the year is divisible by 400. Then, it is a leap year.
- In the European Union, February 29 officially became the leap day only in 2000.
- In the English speaking world, it is a tradition that women may propose marriage only on leap years.
- In Greece, it is believed that getting married in a leap year is bad luck for the couple. Apparently one in five engaged couples in Greece will avoid planning their wedding during a leap year.
- A person born on February 29 may be called a "leapling" or "leaper". In common years they usually celebrate their birthdays on 28 February or 1 March.
- For legal purposes, a leapling's legal birthday depends on how different laws count time intervals. In Taiwan, for example, the legal birthday of a leapling is 28 February in common years, so a Taiwanese leapling born on February 29, 1980 would have legally reached 18 years old on February 28, 1998.
- In the United States, some people have referred to this date as Sadie Hawkins Day with women being given the right to run after unmarried men to propose. Sadie Hawkins was a female character in the Al Capp cartoon strip Li'l Abner. Many communities prefer to celebrate Sadie Hawkins Day in November which is when Al Capp first mentioned Sadie Hawkins Day.
5 years ago