Do All Countries Use the Gregorian Calendar?

168 of the world's countries use the Gregorian calendar as their sole civil calendar as of 2021. Five countries have not adopted the Gregorian calendar: Afghanistan and Iran (which use the Solar Hijri calendar), Ethiopia and Eritrea (the Ethiopian calendar), and Nepal (Vikram Samvat and Nepal Sambat).

Why does China use the Gregorian calendar?

Although the People's Republic of China uses the Gregorian calendar for civil purposes, a special Chinese calendar is used for determining festivals. Various Chinese communities around the world also use this calendar. The beginnings of the Chinese calendar can be traced back to the 14th century B.C.E.

Is the Gregorian calendar still in use?

The Gregorian calendar is today's internationally accepted civil calendar and is also known as the Western or Christian calendar.