There are 52 weeks in a year. This is because a week is defined as a period of seven days, and a year is approximately 365.25 days long (or 366 days in a leap year).
Dividing 365.25 by 7 gives a quotient of 52 with a remainder of 1, which means there are 52 full weeks in a non-leap year and 52 weeks plus 1 extra day in a leap year.
However, some organizations or industries may use a 52-53 week fiscal year instead of the standard 52 week calendar year.
