Gregorian calendar was introduced by Pope Gregory XIII which explains how the name came about.
Julian calendar has 2 types of years: Normal year and Leap year.
The normal year has 365.25 days and the leap year has 366. Normal year is actually 11 minutes less.
Gregorian calendar makes up for the 11 minutes missing in normal Julian calendar by making years divisible by 100 but not divisible by 400 to be a leap year. For example, 1700, 1800, 1900 and 2100 are not leap year.
Answer Anonymously
Copy Link
