There are 52 weeks in a year, which is calculated based on the number of days in a year and the number of days in a week. A standard year has 365 days, and when divided by 7 days in a week, it results in approximately 52.14 weeks. In leap years, which occur every four years, there are 366 days, still resulting in just about 52 weeks and an extra day. Understanding these time measurements is essential for organizing calendars, scheduling events, and planning activities throughout the year.