Gregorian calendar is a specialized calendar system, which will still use till today. It involves the solar dating system and it is named after Pope Gregory XIII, who issued it in 1582, making it the official format for all the Catholic Christendom.
The two different ways to express time after year 1 on the gregorian calendar is CE and AD
C.E stands for Common Era or Christian Era, while
AD stands for Anno Domini, which is the Latin language for “in the year of the Lord”
Hence, the gregorian calendar for example two different ways to express time after year 1 on the gregorian calendar is 2021 CE and AD 2021.
Therefore, the two different ways to express time after year 1 on the gregorian calendar is CE and AD
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