how many weeks has a year
There are 52 complete weeks in a year. The year has 365 days, leaving one extra day. A leap year has 366 days, adding a second extra day. This makes 52 1/7 weeks in a normal year and 52 2/7 weeks in a leap year.
In a Gregorian mean year, there are 365.2425 days, and thus exactly 5271â400 or 52.1775 weeks (unlike the Julian year of 365.25 days or 525â28 â 52.1786 weeks, which cannot be represented by a finite decimal expansion).