What is a Leap Year?
A leap year is a year with one additional day, which is added to keep synchronized with the astronomical year. Seasons of the year and astronomical events do not repeat in a whole number of days, so it is necessary to add an extra day every few years to catch up with the astronomical year.
In the Gregorian calendar, we use today a leap year has 366 days instead of 365. An extra day is added every four years at the end of February, so it has 29 days instead of 28. It is necessary because the solar (astronomical) year is a bit longer than 365 days — it has 365 days and almost 6 hours, i.e. it has approximately 365.25 days.
Calculator to check if a year is a leap year
Which years are leap?
In our calendar (Gregorian) a leap year is a year which is both evenly divisible by 4 and not divisible by 100 or just is evenly divisible by 400.
- 1996 year is a leap year because it is divisible by 4 and not by 100;
- 1800 year is not a leap year because it is divisible by 4, but also by 100 (and not by 400);
- 2000 year is a leap year because it is evenly divisible by 400.
When is the next leap year?
The current year 2021 is not leap year. The following nearest years are leap: