📖 what
What is a leap year?
ScienceCalendar
Quick Answer
A leap year is a year with 366 days instead of 365, adding February 29. It keeps the calendar aligned with Earth’s orbit around the Sun.
The Full Story
A leap year occurs because Earth takes about 365.2422 days to orbit the Sun, not exactly 365. To correct the difference, most leap years add an extra day to February. In the Gregorian calendar, a year is usually a leap year if it is divisible by 4, except century years must also be divisible by 400. That is why 2000 was a leap year but 1900 was not. Without leap years, the calendar would gradually drift away from the seasons.
Key Facts
1.Leap years have 366 days
2.Gregorian leap-year rule includes the 400-year exception
3.Earth’s orbit is about 365.2422 days
YouTube Angle
Suggested video title for this topic:
"Why do we need February 29? It’s all about Earth’s orbit."