Our calendar is called the Gregorian calendar and was instituted by Pope Gregory XIII in 1582. There are many other calendars. Learn about these calendars and the meanings of B.C.E and C.E.

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a.d, anno domini, b.c., b.c.e, before christ, before common era, c.e, common era, gregorian calendar, khan academy, khan academy: common questions about dates, pope gregory xiii, calendar time

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Classroom Considerations

Knovation Readability Score: 4 (1 low difficulty, 5 high difficulty)
The intended use for this resource is Instructional

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