The Pope Knows

Leap Year: Did you know Pope Gregory XIII is responsible for it? It's true... that and a mysterious 10 days that disappeared altogether.

In 1582, Pope Gregory did away with the Julian (yes, named after Julius Caesar) calendar and took his first leap - he skipped forward 10 days to start the calendar most widely used calendar in the world today, thereby obliterating 10 days altogether - bummer if your birthday fell on those days!Julian_to_Gregorian_Date_Change

This "Gregorian Calendar" is a solar calendar based on a 365-day common year divided into 12 months of irregular lengths. The previous "Julian Calendar" was inaccurate. It did not properly reflect the tropical year which is the actual time it takes the Earth to circle once around the Sun.

Note: While Pope Gregory is responsible for imposing this new calendar and vaporizing the 10 days required to reset with the Sun, the Gregorian calendar is only named after Pope Gregory XIII. It is actually an adaptation of a calendar designed by Italian doctor, astronomer and philosopher Luigi Lilio (also known as Aloysius Lilius). He was born around 1510 and died in 1576, six years before his calendar was officially introduced.


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