Is the current Gregorian calendar also called?

The current Gregorian calendar is the Gregorian calendar, and it is also translated into national calendar, frontal calendar, Gregorian calendar and Gregorian calendar, which is called the AD. Julian calendar was reformed by Italian doctor and philosopher aloysius Lilius and promulgated by Pope Gregory XIII in 1582. Gregorian calendar is a kind of solar calendar, which was officially adopted in China in 19 12, replacing the traditional China calendar (namely, the constitutional calendar), while the traditional China calendar is a kind of solar calendar, so Gregorian calendar is also called solar calendar, western calendar and new calendar in Chinese. The Gregorian calendar, like julian calendar, has a leap day at the end of February every four years, but it is specially stipulated in the Gregorian calendar that all century years (divisible by 100) have no leap day; Therefore, every 400 years, there are only 97 leap years in the Gregorian calendar, which is 3 leap years less than that in julian calendar. The average length of the Gregorian calendar is 365.2425 days, which is close to the average tropical year of 365.438+099074 days, that is, the error is about 3300 days, and it is also closer to the tropical year of the vernal equinox, that is, the error is about 8000 days. In julian calendar, the Gregorian calendar year is 365.25 days, and the error is one day every 128 years. By 1582, the difference between the julian calendar vernal equinox (2 1 March) and the actual time of the earth's revolution to the vernal equinox is 10 day. Therefore, when the Gregorian calendar was implemented, 1582, the day after 10, julian calendar was designated as Friday, 1582, 15, that is, 10 days were deleted, but the original cycle of the week remained unchanged. The Gregorian calendar follows the calendar of julian calendar. Since the traditional year of Jesus' birth, it has been called "AD" or "AD".

Although the Gregorian calendar reform is based on religious reasons, the main contribution of the reform is to provide an accurate and reliable official and folk calendar system for civilized society. Although the Gregorian calendar reform was formulated as early as 1582, it took several hundred years to be gradually adopted by various countries-it was formally adopted by Germany in 1700, while Russia did not change from julian calendar to Gregorian calendar until 19 18 after the Red Revolution.