1August 979 15 What is the solar calendar?

Gregorian calendar 65438+10.5. According to the weather of the Gregorian calendar, the date of August 15 of 1979 is June 55438+0979. The solar calendar, called the solar calendar, is a calendar based on the movement cycle of the earth around the sun, with the "tropic year" of the four seasons as the basic cycle, which has nothing to do with the change of the moon. The solar calendar has been widely used all over the world since the 20th century. It is also called Gregorian calendar, julian calendar and Gregorian calendar.