What lunar calendar? Is the date of birth lunar or solar?

The lunar calendar uses the period of the moon to determine the month. The moon never grows up slowly, becomes a full moon, that is, a round moon, then becomes smaller and finally disappears. It's called a month at this time. So it is also called a calendar. The ancient moon in China was also called the lunar calendar, so the monthly calendar was called the lunar calendar. The moon revolves around the earth for about twenty-nine and a half days. So a month in the lunar calendar is 29 or 30 days. A year is called 12 months, and a year is 354 or 355 days. However, it takes about 365 and a quarter days for the earth to go around the sun. One year after the lunar calendar, the earth has not returned to the starting point of the orbit, about ten days short. In this way, one month is missing in three years, and 18 is missing for half a year. That is to say, after 18, the first day of the first month will be in summer instead of winter. What should I do? Astronomers in ancient China figured out how to add one month every three years. The usual year is twelve months, and a year with one month is called leap year, which is thirteen months. Although this can ensure that the first day of the first month is winter, the position of the earth on the orbit of revolution on the first day of the first month of the lunar calendar is not fixed, so the position of the earth on the orbit of revolution on other days is not fixed, about ten days apart every three years. This is why according to the solar calendar, the Spring Festival is sometimes in January and sometimes in February.

There is also a name in the lunar calendar. But farmers can't farm according to the lunar calendar, because the days in the old calendar are not fixed. If the date of farming is mistaken for several tens of days, the harvest will be greatly affected. In order to solve this problem, ancient astronomers in China came up with a good way to divide the earth's orbit into 24 parts. That is, China's 24 solar terms. Farmers use these 24 solar terms to farm, not the lunar calendar.

The solar calendar, also known as the solar calendar, uses the period of the earth's revolution around the sun to make a year have 365 days, and then divides it into 12 months. Similar to the lunar calendar, the position of the days in the solar calendar on the orbit of revolution is also changing, with a difference of one day every four years, which is added to February. In this way, the swing of the solar calendar day is very small, only one or two days. For people, this day or two is nothing and can be completely ignored. So the solar calendar doesn't need solar terms.

traditional Chinese calendar

Lunar calendar, one of the traditional calendars in China, is also called lunar calendar, lunar calendar, ancient calendar, yellow calendar, summer calendar and old calendar. Lunar calendar is a combination of lunar calendar and lunar calendar. On the one hand, the moon moves around the earth as a "moon", and the average length of the moon is equal to "Shuowangyue", which is the same as the lunar calendar principle, so it is also called "lunar calendar"; On the other hand, the "leap month" is set to make the average length of each year as close as possible to the tropic year, and the 24 solar terms are set to reflect the characteristics of seasonal changes, so the lunar calendar combines the characteristics of the yin-yang calendar, which is also called the "yin-yang calendar". Today, almost all Chinese in the world, as well as countries such as the Korean Peninsula and Vietnam, still use the lunar calendar to calculate traditional festivals such as Spring Festival, Mid-Autumn Festival and Dragon Boat Festival. Lunar calendar, one of the traditional calendars in China, is also called lunar calendar, lunar calendar, ancient calendar, yellow calendar, summer calendar and old calendar. Lunar calendar is a combination of lunar calendar and lunar calendar. On the one hand, the moon moves around the earth as a "moon", and the average length of the moon is equal to "Shuowangyue", which is the same as the lunar calendar principle, so it is also called "lunar calendar"; On the other hand, the "leap month" is set to make the average length of each year as close as possible to the tropic year, and the 24 solar terms are set to reflect the characteristics of seasonal changes, so the lunar calendar combines the characteristics of the yin-yang calendar, which is also called the "yin-yang calendar". Today, almost all Chinese in the world, as well as countries such as the Korean Peninsula and Vietnam, still use the lunar calendar to calculate traditional festivals such as Spring Festival, Mid-Autumn Festival and Dragon Boat Festival. Solar calendar, also known as solar calendar. A calendar is based on the period of the earth around the sun. Its average calendar year is the tropic year, and there are two calendar years, one is the normal year, the other is the leap year, and the leap year is only one day away from the normal year. Generally speaking, the Gregorian calendar is an international Gregorian calendar (namely "Gregorian calendar"). Because there are 365.2422 days in a year, not only 365 days, there is a leap year every four years, which is February plus the 29th day. After a leap of four years, it has been revised to 365.25, but there is still an error, so a leap year is subtracted every hundred years, that is, 1700,1800,65438+. It was revised to 365.24. Finally, a leap year is added every 400 years, that is, 1600, 2000 and 2400 have leap years. Finally, it was revised to 365.2425, with an error of 0.0003. It will take about 3000 years for a day, so it is very accurate.

solar calendar

Gregorian calendar (Gregorian calendar) is a common calendar in most countries in the world, which was revised from "julian calendar". Julian calendar is the calendar decided by Julius Caesar, commander-in-chief of ancient Rome in 46 BC.

The solar calendar is a calendar based on the movement of the earth around the sun. It takes one revolution of the earth around the sun as a year. The length of a tropical year is 365.2422 days, that is, 365 days, 5 hours, 48 minutes and 46 seconds. In four years, there are 23 hours 15 minutes and 4 seconds, which is roughly equal to one day, so every four years, 1 day is added, and 366 days are obtained at the end of February, which is a leap year. But four years plus 1 day actually adds 44 minutes and 56 seconds to the tropical year. When the product reaches 128, one more day is counted, that is, 400 years is counted as three more days. The day you were born, there were both lunar and solar calendars.