Gregorian calendar

The Gregorian calendar is the calendar most widely used today, introduced by Pope Gregory XIII in 1582 to correct the inaccuracies of the Julian calendar. It has 12 months and a total of 365 days in a typical year, adding a leap year with an extra day (February 29) every four years to align with the Earth's orbit around the Sun. This adjustment helps maintain the consistency of seasons over time. The Gregorian calendar is used for civil purposes and in many cultures around the world, making it a crucial tool for organization and scheduling.