The '''Gregorian Calendar''', named after [[Pope]] [[Gregory XIII]], is the [[calendar]] that most use today (it is the most widely used in the world). It consists of 365 days in each year, with a 366-day [[leap year]] every fourth year. | The '''Gregorian Calendar''', named after [[Pope]] [[Gregory XIII]], is the [[calendar]] that most use today (it is the most widely used in the world). It consists of 365 days in each year, with a 366-day [[leap year]] every fourth year. |