What does leap February mean?

Question 1: What does February leap mean? The solar calendar is once every four years, and February 29th is a leap February. There are two February in the lunar calendar year, and the second February is a leap February. It's all because the cycle of the sun's rotation on the moon relative to the earth is not caused by the number of days.

Question 2: What do you mean by leap in February? There is a leap year every four years, that is, that year repeats for one month, that is, two February.

Question 3: What do you mean by leap in February? February in leap year is 28 days (365 days) in normal year and 29 days (366 days) in leap year.

Question 4: What does February leap mean? It means dividing one year by four, except leap years. February in leap year has 29 days.

Question 5: When is February a leap month and how to calculate it? A year divided by 4 is a leap month, just like 2004, 2008, 20 12, etc.

Leap month, February has 2 days, one more day!

Question 6: When will there be a leap in February in the lunar calendar? The lunar calendar is a leap year and the leap year is February.

What's going on here?

To answer this question, we have to start with the arrangement of the calendar.

At present, there are two calendars in most parts of China: one is the solar calendar; The other is the lunar calendar, also called "summer calendar".

The solar calendar is also called the solar calendar, and the tropic year is the basis of the calendar. Because the length of the tropic year is equal to 365.2422 average solar days (that is, 365 days, 5 hours, 48 minutes and 46 seconds), it is not a whole day. Therefore, the solar calendar takes 365 days as the average year, which is also the "average year". In order to clear up the gap between it and the actual tropic year, the solar calendar adds 97 days in 400 years by "setting a leap"; Or one day is added in February every four years, which is the "leap year" of the solar calendar.

Lunar calendar is different. In fact, it is a kind of "yin and yang calendar", which is the same as the lunar calendar and similar to the solar calendar. It is based on the moon's profit and loss cycle as the calendar month, and also takes into account the annual solar terms.

Generally speaking, the moon's profit and loss period is 29.53 days (29 days 12 hours, 44 minutes and 2.9 seconds), which is called "Wang Shuo Moon".

Lunar calendar year 12 months, big month 30, small month 29. A normal year is 354 days, which is less than one year in the solar calendar 1 1 day. One year is 1 1 day, and there will be a difference of more than one month after three years. At this rate, our Spring Festival will be celebrated in summer in less than 15. As for the "dragon boat race" of the Dragon Boat Festival, it should also be held in the "nine-year winter" season; At 15, there will be another reversal ... what a coward!

In order to synchronize the lunar calendar with the solar calendar in seasons, our ancestors adopted the method of "adding leap months" to "adjust the surplus and deficiency" and set seven leap months in 19, because the total number of days in the tropical year of 19 is basically equal to 19 plus seven leap months in the normal year. Therefore, the lunar calendar stipulates a leap month every two or three years. In the year with leap month, the lunar calendar is 13 months, accounting for 383 days.

So, in which month should this leap month be placed?

Through long-term practice, our ancestors divided a year into 24 solar terms, which were placed in 12 months, and each month had two fixed solar terms: the former was called "Festival" and the latter was called "Zhong". Such as "beginning of spring" and "Rain" in the first month. The former is "frugality" and the latter is "moderation". Solar terms and neutral gas are alternately arranged in monthly order. The average interval between two adjacent solar terms and neutral gas is 30 and a half days. However, the average lunar month (the first lunar month) is only 29 and a half days. In this way, next month's solar terms or gas will be delayed by one or two days from the previous month's solar terms and gas. At a certain point in time, "Zhong Qi" was not in the middle of the month and then moved to the end of the month. Next month, there will be only one kind of "frugality" and no "moderation". According to the lunar calendar, any month with only solar terms and no neutral atmosphere can not be regarded as a month independently, but only as a subsidiary (sub-month) of a month-leap month.

In the month after February of the lunar calendar this year, from the first day to the thirtieth day, that is, from March 2 1 to April 18 in the solar calendar, there is only one solar term "Qingming", which is not neutral. Therefore, it is regarded as a subsidiary (sub-month) of February, which is called "leap February". In this way, there will be two February in the lunar calendar this year, and the Spring Festival next year will be 18 days later than this year.

It should be pointed out that the setting of the lunar leap month is an artificial measure to adapt to the laws of nature and has nothing to do with superstitious ghosts and gods. Therefore, any rumors and behaviors (superstitious activities in rural areas) that "disasters are related to leap months" (such as "February flies") are against science and are not worth refuting.

Question 7: leap February list leap February1645-35451651year, 1670, 1727, 1765,/kloc-. 1909， 19 17， 1928 1947，2004，2023，2042，2099，2 137，265438+2653，2748，3006，3025，3 10 1，330

Question 8: What does leap month mean? A leap month is an additional month in every leap year.

Probably many people think that "leap month" and "leap year" are the same meaning, but they are not. Although there is only one word difference between them, their meanings are quite different.

"Leap year", which we usually say is 365 days a year, is actually a rough figure, and the exact figure should be 365.2422 days. Then there are 365 days in a year, which is 0.2422 days different from the actual year, so four years later, it is nearly one day less than the actual year. In order to make up for this difference, the calendar stipulates that four years is a leap year, that is, a year divisible by four is a leap year, and additionally stipulates that every century year (a year with two zeros at the end) must be divisible by 400 to be a leap year. For example, 1996 is a leap year, and 2000 is also a leap year, but 1700 is not. The leap year in the solar calendar has 29 days in February, the leap day is February 29 and the leap year in the solar calendar has 366 days. That is to say, February of leap year in the solar calendar is not called leap February, and leap month is unique to the lunar calendar.

Now let's talk about "leap month". Leap moon refers to a phenomenon in the lunar calendar. The lunar calendar arranges the big moon and the small moon, that is, the moon, according to the full and short moon. The length of a moon is 29.5306 days, which is the cycle of the moon's profit and loss. According to the lunar calendar, there are 30 days for the big moon and 29 days for the small moon, and a year is 12 months * * 354 days. Lunar month has no seasonal significance, so its length is 29.5306× 12=354.3672 days, which is less than 365.2422 days in the tropic year (that is, near 1 1 day) 10.88 days, and 0.9/kloc per month. The difference between solar calendar year and year is 1 1 day. Only after 17 will the date of the lunar calendar be reversed in the same season. For example, a year's New Year is spent in the snow, and a new year comes after 17. The use of such a calendar naturally cannot meet the needs of agricultural production, so the lunar calendar in China has been in parallel with the 24 solar terms since the Qin and Han Dynasties, and the 24 solar terms are used to guide agricultural production.

Question 9: What do you mean by running in February? It runs for 29 days in February and 28 days in normal month.