Topic Details (Notes format)

Historic Calendars: Julian vs. Gregorian

Subject: Static GK (General Knowledge)

Book: General Time Knowledge

The Julian calendar introduced by Julius Caesar had a leap year every four years without exception, accumulating minor errors over centuries. By the 16th century, the calendar was out of sync with astronomical events, prompting Pope Gregory XIII to implement the Gregorian reform. Many countries adopted the Gregorian calendar gradually, leading to “lost days” during the transition. This shift remains a reference point for historians studying dated events. Comprehending these two major calendar systems shows how time measurement evolves in response to scientific and ecclesiastical imperatives.

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