How Many Weeks in a Year?
A year is comprised of 52 weeks, with some years having 53 weeks. That extra week is known as a leap week and is added to the end of the year. This is done to keep the calendar year in sync with the astronomical year.
What is an Astronomical Year?
An astronomical year is the length of time it takes for the earth to make one complete revolution around the sun. This period of time is 365.2422 days, or 52.1775 weeks. This is slightly more than 52 weeks, so an extra week is added to the calendar year every five or six years to keep it in sync.
What is a Leap Year?
A leap year is a year with an extra week added to it in order to keep the calendar year in sync with the astronomical year. Leap years occur every four years, with the exception of years that are evenly divisible by 100, but not divisible by 400. For example, 2000 was a leap year, but 1900 was not.
How is a Leap Week Added?
A leap week is added to the end of a year in order to keep the calendar year in sync with the astronomical year. This week is known as a leap week, or a leap day, and is added to the end of the year, after the last day of December.
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