A week is a unit of time that consists of seven days. It is commonly used in calendars and is a standard measure for organizing time in many cultures. The days of the week are typically named as Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, and Sunday. Weeks are often used to plan activities, work schedules, and events. For example, many people receive their paychecks on a weekly basis, and schools often operate on a weekly schedule. The concept of a week helps individuals and societies manage time effectively and maintain routines.