How to write the solar calendar and lunar calendar on the old yellow calendar?

Just write a date when you put the tin foil red envelope. For example, if you write a lunar calendar on a red envelope, you don't have to write 20 10 year after the first day of the twelfth lunar month, but the ugly year is 20 10 year, which is the calendar year. It would be heavy to write 20 10 years.

The date writing format of the tin foil red bag is as follows:

1, standard format of Gregorian calendar date: February 6, 2007; Or February 6, 2007.

2. The standard format of lunar calendar date is: the 19th day of the twelfth lunar month in Dinghai.

3. The standard format of calendar date is: Ding Hai year, Ren Yin year, Xin Yue year and the remaining year.

The reference object of the solar calendar is the sun, which determines the year first and then the month.

The ancients used a scale to measure the length of the sun shadow. The longest day of the four seasons is called the winter solstice, and the time from one winter solstice to the next is called the tropic of cancer. The length of 365 days is 5: 48: 46. A tropical year is divided into 12 months, big month is 3 1 day, small month is 30 days, and February is 28 days.

Extended data

The lunar calendar is the solar calendar, and its reference is the moon. It first determines the month, and then determines the year according to the month.

The ancients called the day when the moon was completely invisible "Shuori" and the day when the moon was the roundest "looking at the sun". Shuori is designated as the first day of each month, and Wangri is designated as the fifteenth day of each month. It takes one month from Shuori to Wangri, and then to Shuori, which is called "Shuowangyue" in legislation. The exact time is 29 days 12 hours, 44 minutes and 3 seconds, which is about 29 and a half days.

The lunar calendar defines 12 moons as a year, that is, a little more than 354 days.

Because the moon is easy to observe, about 30 days is a cycle, unlike the sun, which can only have a reincarnation in 365 days, so most early human civilizations used the lunar calendar.

References:

Baidu Encyclopedia-Huangli