What's the difference between lunar calendar, lunar calendar and solar calendar?

1. Gregorian calendar: the average number of days in a year in Gregorian calendar depends on the time when the earth orbits the sun once; Moreover, the number of days in a month is artificially set, which has nothing to do with the number of days the moon orbits the earth. The Yi calendar used in the world includes Gregorian calendar, Islamic calendar and October calendar, among which Islamic calendar is the most accurate.

Second, the lunar calendar: the average number of days in a lunar month depends on the time when the moon orbits the earth, and its number of days in a year has nothing to do with the time when the earth orbits the sun once. At present, among the calendars used in the first month in the world, only the Islamic calendar (hijri calendar) is a lunar calendar, which is only used for religious activities.

Third, the lunar calendar: The lunar calendar in China is a kind of lunar calendar-the average number of days in a year is calculated according to the time when the earth orbits the sun once, and the average number of days in a month is calculated according to the average number of days when the moon orbits the earth once. Besides the lunar calendar (also called the summer calendar), there are Tibetan calendars and the Yi people's lunar calendar still in use.

Gregorian calendar: In ancient Rome, Emperor Julius Caesar decided to use the solar calendar, so the solar calendar at that time was called julian calendar. Later, Christianity decided to take julian calendar as the Christian calendar, and decided to take the year when Jesus was born as the first year of the Christian calendar. 1582, julian calendar was found to be inaccurate, and the Pope decided to modify the calendar, which is the so-called Gregorian calendar.

Gregorian calendar was originally used in Christian countries. Later, with their invasion and expansion, it was brought all over the world and became the "Gregorian calendar" used by most countries in the world.

Tell me the difference again.

China lunar calendar is commonly known as the summer calendar, which is a combination of yin and yang-its year is the solar calendar and its month is the lunar calendar; The year of the lunar calendar is marked by heavenly stems and earthly branches, not by numbers. For example, this year's lunar calendar is a happy year and an ugly year, not 202 1.

Gregorian calendar is a kind of solar calendar; It is marked by numbers. For example, the Gregorian year is 202 1.

The lunar calendar determines the number of days in the "month" according to the cycle of the moon orbiting the earth, while the number of days in the "year" is artificially set. Now the only real lunar calendar in the world is the Islamic calendar.

The solar calendar determines the number of days in a year according to the cycle of the earth's orbit around the sun, while the number of days in a month is artificially set. The Gregorian calendar includes the current Gregorian calendar, the Islamic Gregorian calendar, the Yi October calendar and the calendar used by the Taiping Heavenly Kingdom.

You can refer to my calendar profile published in Baidu Library.