Lunar conversion

How to convert the lunar calendar into a new calendar? Lunar calendar is an ancient time calculation method in China, and solar calendar is an international time calculation method. 1993 lunar September 13 is the Gregorian calendar1993101October 27th.

How to convert lunar calendar into national calendar and Gregorian calendar

Derivation of conversion formula of 1.

Gregorian calendar is 365.242 199074075 days per year (simplified as 365.2422 days), while Hijri calendar is 354.367074375 days per year (simplified as 354.36707 days), so Hijri calendar is only equivalent to 354.36707/365.2422 = 0.9723.2008080806 New Year's Day in the first year of Muharram was set on July 622 16. Due to the calculation error of the calendar at that time, according to the modern Gregorian calendar, the current July 16 should be changed to July 19, and the period from New Year's Day to July 19 of that year has reached 200 days. Phase 200/365.2422 = Because it didn't reach 0.970224 calendar year until the second year of Hijrayan, the formula for converting from Hijrayan to Gregorian is:

(Muharram 1 year 1 1)×0.924+622.76. 56637.86666666667

= Gregorian calendar date ............................................. (1)

Or hijri calendar year × 0.970224+62 1.5774.

= find the calendar year, month, year, month, year, month, year, month, year, month, year, month, year, month, year, year, year, month, year, year, year, month, year, year, month, year, year, year, year, year, year, year, year, year.

Among them, 62 1.5774 comes from 622.5476-0.9274.

If a historical fact is not found on the first day of New Year's Day, the total number of days that have passed this year can be converted into Gregorian years and added to the total number of Gregorian years.

However, the total number of days in the above-mentioned Gregorian calendar year is actually the measured number in the tropic year, because the number of days in the current Gregorian calendar year is actually 365.2425 days, which can only be basically consistent with the number of days in the tropic year, and there will be a difference of one day after more than 4,000 years.

In fact, the Gregorian calendar in the ten years of Wanli of Ming Dynasty, September 18, 990, 16,1June 4, 582 (including 4 days) is called julian calendar, and julian calendar has 365.25 days every year, which is far more different from the Gregorian calendar, that is, the modern Gregorian calendar is about/kloc. Therefore, we still can't use two formulas (1) and (2) for the conversion between the official calendar and the official calendar in julian calendar period, but we need to modify the above two formulas slightly according to the actual number of days in julian calendar. The results are as follows:

(IJL) × 0.9702+622.5393

= Represents Gregorian year, month, year, month, year, month, year, month, year and year (3)

Calendar year × 0.9702+62 1.569 1.

= Represents the Gregorian year, month, year, month, year, month, year, month, year, month, year, month, year, month, year (4)

Among them, 0.9702 is the result of 354.36707/365.25, 0.5393 is the result of the total days from New Year's Day to July 16 divided by 365.25, and 622.5393-0.9702 = 621.554366.

Now, the following table lists the calendar year, month and day calculated by two formulas every 100 year from the 52nd Muharram month:

Convert the national calendar into Gregorian calendar

From the calculation results of the table, we can see that the same formula cannot be used in different calendars, otherwise the error will be great. 10 years ago, it was found that the date of vernal equinox in julian calendar was quite different from the measured results, and it was ten days away from the Wanli decade. Therefore, Gregory XIII decided to revise julian calendar. There are two points in the reform. 1. The day after Gregorian calendar 1582 10.04 should be changed from 10.05 to 10.00. Secondly, julian calendar has a leap year every four years and a hundred leap years in 400 years. The Gregorian calendar still maintains the Confucian tradition of a leap year of four years, but only 97 leap years are arranged every 400 years, and there is no leap year every 100 years, and a leap year will be added in 400 years [6]. The chronological facts of julian calendar and Gregorian calendar are as follows:

Confucian calendar (365× 300+366× 00) ÷ 400 years = 365.25 days/year.

Gregorian calendar (365× 303+366× 97) ÷ 400 years = 365.2425 days/year and "Ming history? The * * * palace calendar (solar calendar) included in the calendar is 31 leap in 128 ... >>

How to calculate the new lunar calendar? The new calendar you mentioned is Gregorian calendar, also called Gregorian calendar. Based on the earth's time around the sun for one year, ***365 days and 5 hours, nearly 6 hours, with an average of only 365 days a year. The extra five hours are nearly six hours, and an average of one day is added to February every four years, so sometimes there are 29 days in February in the Gregorian calendar.

And the lunar calendar you said is the lunar calendar, also called the summer calendar. It takes a month, 29 and a half days, for the moon to be full and short at a time. A year is about 355 days, 30 days in the big month and 29 days in the small month. Because the difference between the number of days in the Lunar Year and the Earth Year (Gregorian calendar) is about 1 1 day, there should be a leap month every three years and seven leap months every 19 years, so that the average number of days in each year is close to the Earth Year (Gregorian calendar) to adjust the four seasons. The specific leap month depends on the elasticity of solar terms. For example, this year is leap May.

It is precisely because the calculation methods of solar calendar and lunar calendar are different, the number of days in each year is different, and the starting time of the first day of each year is also different, so the month and date of solar calendar and lunar calendar are out of sync, with a difference of about one month.

Because the Chinese calendar has always been used in the history of our country, most places in our country determine people's birthdays according to the lunar calendar when they were born, which is also a national habit.

However, due to the accurate and convenient timing of the Gregorian calendar, most countries in the world adopted the Gregorian calendar. China officially adopted the Gregorian calendar as early as 19 12 after the Revolution of 1911. Therefore, in formal occasions, the date of birth is based on the Gregorian calendar, such as identity cards, file records, resumes and so on.

You can check the perpetual calendar, and it will be easier to understand after you know the above situation. I'll tell you a very simple way to look at the perpetual calendar. Generally, the dates in the solar calendar are marked with * * * numbers, and the dates in the lunar calendar are marked with chinese numerals under the * * * numbers.

As you said, 199 1 was born on April 7th:

1, if this is the date of the Gregorian calendar, then the corresponding * * * number on the calendar is the China number on February 23rd under April 7th of the lunar calendar, which is your birthday.

2. If this is the date of the lunar calendar, then the * * * number corresponding to the China number on the calendar on April 7th is your birthday on May 20th in the solar calendar.

How to convert China's solar calendar, lunar calendar and solar calendar in dates? Baidu is too complicated to study by itself.

The Gregorian calendar is changed from the lunar calendar to the Gregorian calendar, which is internationally accepted. According to the Gregorian calendar, it takes one year for the earth to revolve around the sun, ***3 65 days, 5 hours, 48 minutes and 46 seconds. The average year is only an integer of 365 days, not a mantissa; A year is divided into 12 months, big month 3 1 day, small month 30 days, and February only has 28 days. The mantissa of four years accumulates to *** 1 day, and is added to February of the fourth year, which is called leap year. So February in leap year has 2 9 days. The lunar calendar orders a full moon for one month, ***29 and a half days. For the convenience of calculation, the big month is 30 days and the small month is 29 days. In 12 months of a year, large and small months are generally arranged alternately. The lunar calendar has only about 354 days a year, and there is no difference between a normal year and a leap year. The lunar calendar does not consider the movement of the earth around the sun, so the changes of the four seasons in the lunar calendar have no fixed time and cannot reflect the seasons, which is a great shortcoming. In order to overcome this shortcoming, people later decided on a calendar called Yin-Yang calendar. The summer calendar still in use in China (some people call it lunar calendar or lunar calendar) is this kind of lunar calendar. Like the lunar calendar, it is also based on the bright and full time of the moon to customize a month, with a big month of 3 0 days and a small month of 29 days. However, it also adopts the method of adding leap months to make the average number of days in a year close to the number of days in the solar calendar to adjust the four seasons. Every two or three years, there will be an extra leap month in the summer calendar. The lunar calendar, also known as the lunar calendar, takes the moon's orbit around the earth as one month and the earth's orbit around the sun as one year, which is actually equal to the lunar calendar. This calendar was adopted in China before the first year of the Republic of China, so it is called the old calendar. Generally speaking, the lunar calendar is suitable for farmers and is named "Lunar Calendar".

The comparison table for converting the lunar calendar into the Gregorian calendar is Gregorian calendar1Sunday, April 29th, 945.

How are the lunar calendar and Gregorian calendar converted? (how to calculate? ) Do you calculate by mouth or by pen?

I'm telling you, this is unreliable, it can't be calculated at all, and the transformation involved is not a simple formula. On the contrary, its transformation is quite complicated.

If you are interested in writing programs, I can provide a library of conversion functions. You can realize the conversion between the lunar calendar and the Gregorian calendar by calling a function.

At present, I have realized the transformation perfectly, and I can provide it if necessary.

How to convert the lunar calendar into the Gregorian calendar is Gregorian calendar 165438+ 10/3. There are days in this calendar. If you want to know how to change it, of course, the Gregorian calendar is fixed. 1, 3, 5, 7, 8, 10, 12 are all days of 3 1, and February 28th (once every four years, as in 2008.

For the lunar calendar, its essence is the lunar calendar, and it follows the lunar calendar, which is a very complicated astronomical knowledge. It includes 24 solar terms.

Remember that the solar calendar is 1, 3, 5, 7, 8, 10, La, 3 1 day, and the rest are 30 days, except February 28th.

If the leap month is February 29th, there will be only one more day.

How to convert the lunar calendar into the solar calendar? The first day of each month is called the new moon, and the last day is called darkness. The fifteenth, sixteenth or seventeenth day of the lunar calendar is called Wangwang, and the day after Wangwang is called Wangwang, so the New Year's Eve of the lunar calendar is not the same day every year. The basis of the lunar calendar is the year of the tropic of Capricorn and the first month. The tropic year is the time required for the sun to pass through vernal equinox twice in a row, that is, 365.2422 days (365 days, 5 hours, 48 minutes and 46 seconds). "The first month of the lunar calendar" is the time between two consecutive new moons (new moons) or two full moons (full moons), that is, 29.5306 days (June 29th 12 hours, 44 minutes and 3 seconds). Because 12 "Wang Shuoyue" is only 354.3672 days, which is more than 10 days different from 365.2422 days in the tropic year, this difference adds up to a leap month. As early as the Spring and Autumn Period in 5600 BC, the calendar of China adopted the arrangement of seven leap months in nineteen years. However, the calculation method of China lunar calendar is different from that of * * * and South Korea, with a general difference of one or two days. The date of the lunar calendar is based on the full moon, and each new moon is the first day. The full moon is 15th (16th) and 29th (30th). However, at present, the date of the solar calendar is usually used to express the time. If you want to convert the date of the solar calendar into the date of the lunar calendar, you can use the following two methods: one is to search the newly edited perpetual calendar, for example, what is the date of the lunar calendar on June 8, 1984? Open the perpetual calendar, 10 June is the eleventh lunar month, so it is inferred that June 8 is the ninth day of the ninth lunar month. Secondly, we can use the formula to calculate the lunar calendar date: suppose: AD year-1977 (or 190 1) = 4q+r, then: lunar calendar date =14q+10.6 (r+