Question

The calendar era started from the day of this event
A) Christian era
B) Dark era
C) Coronation era ​

Answer 1

Answer:

A calendar era is the period of time elapsed since one epoch of a calendar and, if it exists, before the next one.[1] For example, the Gregorian calendar numbers its years in the Western Christian era (the Coptic Orthodox and Ethiopian Orthodox churches have their own Christian eras).