Who named julian calendar after the solar calendar?

Egyptians have long known that a year is not a full 365 days, but a little longer, about 1/4 days. However, because the conservative ruling class insists on 365 days a year, it now needs to leap every four years, with an extra 1 day in leap years to make up for the shortage of the past four years. At that time, there were people in the world who took the moon as the standard and then added time. This is the lunar calendar. Greece uses the lunar calendar, which requires a leap month. In the 8th century BC, the Roman calendar became more chaotic. There are only 10 months in the Roman calendar every year, and there are 30 days in each month, and the remaining 60 days are not counted as months, because it is catching up with the severe winter. So they only have 360 days a year, which makes them very confused. After Wusha conquered Egypt, the advanced Egyptian Gregorian calendar was brought to Rome. Astronomer Sosichins suggested that the emperor abolish the chaotic Roman calendar and re-edit it based on the ancient Egyptian Gregorian calendar. At that time, although the calendar in Egypt was advanced, there was a difference of 1 day in four years according to the calculation of 365 days in a year, so they didn't make up for it, so it would be wrong to take a long time. Astronomers in Alexandria noticed this problem, which was stipulated when Uzza promulgated the new calendar.

At that time, the Romans thought odd numbers were auspicious, so they defined odd months as big months with 365,438+0 days per month, and even months as small months with 30 days per month. All lucky months have an extra day so that luck can last, but in this way, a year is 366 days. Where can this day be reduced? At that time, the death penalty in ancient Rome was to be executed in February, so this unlucky February was one day less, and February became 29 days. When Emperor Augustus arrived, his birthday was in August. He thought about how he was born by miscarriage, so he ordered that two months after August be designated as big months and one month as abortion to show the difference brought by birth. There were only 30 days in August, which became 3 1 day, a day less than other months, so there was a day less from February, and there were only 28 days in February. Julian calendar is a solar calendar named after Caesar, which is more in line with the changes of solar terms and is widely welcomed by people. But it is not very accurate, because its year is 365 days. In fact, the real year is 365.25-0.0078 days instead of 365 days. By 1582, this date will exceed 10 days. So Pope Gregory promulgated a new reform, and julian calendar after the reform was called the Gregorian calendar. He stipulated that leap year is only a year divisible by 400 every hundred years, and the Gregorian calendar we adopt today is the Gregorian calendar.