How is the Islamic calendar, Islamic and Gregorian calendars calculated?

Seran! The Islamic calendar is a pure lunar calendar, with the moon orbiting the earth once in one month, that is, the moon is full and missing once. There are 12 months in a year, with a single month being a big month with 30 days per month, and a double month being a small month with 29 days per month.

The number of days in August and September is not fixed and is determined on an ad hoc basis according to the actual situation. The religious calendar begins with the new moon (Emei month), which is equivalent to the second or third day of the lunar calendar. The modern lunar calendar is not a pure lunar calendar, so it cannot be directly converted using the lunar calendar.

There are no leap months in the Islamic calendar, and theoretically a year – 12 synodic months – a total of days. In order to ensure that the beginning of the month and the capital of the year start from the day when the Emei month is seen, the religious calendar is adjusted by adopting the method of 30 years and 11 leaps, that is, adding one day at the end of the first year of each 30-year cycle, and there are 355 days in a year. The calendar year is about 11 days shorter than the return year, and according to the solar year, the date of the first year of the year is gradually advanced, and any month of the calendar may fall in any month of the Gregorian calendar, after about 33 years.

You are also welcome to walk on the path of Islam, Islam is the path of peace and obedience, you must first understand why you want to become a Muslim, not blind obedience, if you want to become a religion, you can first go to the local mosque to ask the imam, they will generally help you, you can also through the Zhongmu network, the window of Islam, etc. ** to understand Islam first, and finally may you walk on the right path, feel the power of the one Allah, may the peace of the Lord be with you!

Go to any mosque, or find a Muslim to take you there, and perform a simple confession of faith, even if it is procedurally approved. But not being a Muslim has little to do with it, only being firm in your faith and doing good deeds is the mark of being a Muslim.

It is calculated directly using the lunar calendar of our country.

In the Islamic calendar, the moon is full and absent for one week (synodic month) as a month, which lasts 29 days, 12 hours, 44 minutes, and a year, and the moon is absent for 12 weeks, which lasts for 354 days, 8 hours, 48 minutes, and seconds.

The singular month is the "big building", that is, the big month, 30 days; Even-numbered months, i.e., months, are "small buildings", i.e., small months, 29 days; December is 29 days for "small construction" in ordinary years, and 30 days for "big construction" in leap years. In this way, there are 354 days in a common year and 355 days in a leap year.

The calendar year of the Gregorian calendar is a day, and it is about one day wrong every 128 years. By 1582, the date of the vernal equinox (March 21) in the Julian calendar was 10 days apart from the actual time of the Earth's revolution to the equinox. Thus, when the Gregorian calendar was introduced, the day after Thursday, October 4, 1582 in the Julian calendar was changed to Friday, October 15, 1582 in the Julian calendar, i.e. 10 days were deleted, but the original cycle of the week remained the same.

The Islamic calendar is a purely lunar calendar.

Taking the moon orbiting the earth as one month, that is, the moon has a period of one month and 12 months is a year.

The odd-numbered months of the Islamic calendar are 30 days, the even-numbered months are 29 days, and the year is 354 days, which is 11 days less than the solar calendar.

In this way, three years is about a month less than the solar calendar.

Because it is not a solar calendar, the Islamic calendar has nothing to do with the Earth's orbit around the sun, and therefore has nothing to do with seasonal changes, for example, this year's Eid al-Adha festival is in autumn, and a few years later, it is summer.

In the Islamic calendar, the moon is one month with a full moon and a period of 29 days, 12 hours and 44 minutes, and the moon is full and absent for 12 weeks as a year, lasting 354 days, 8 hours and 48 minutes. The singular month is the "big building", that is, the big month, 30 days; Even-numbered months, i.e., months, are "small buildings", i.e., small months, 29 days; December is 29 days for "small construction" in ordinary years, and 30 days for "big construction" in leap years. In this way, there are 354 days in a common year and 355 days in a leap year.

The Hiji calendar is based on a cycle of 30 years, the first year of each cycle, a total of 11 years for the leap year, and the other 19 years for the common year, with an average of 354 days, 8 hours and 48 minutes per year, and the average number of days in the solar calendar year is 365 days, 5 hours and 49 minutes, which is 10 days and 21 hours and 1 minute less than the solar calendar. [1]

In this way, the Muslim fasting and Hajj dates are fixed in the Islamic calendar, but in the Gregorian calendar, every year, there is a turn every month, according to the average life expectancy of a person, in a lifetime, the four seasons of spring, summer, autumn and winter or even every month, it is possible to experience the different feelings of fasting and Hajj, which is the wonderful thing about the Islamic calendar.

The normal year is 354 days, and the run-year is 355 days.

The Islamic calendar is the Hijri calendar, which is called Hijra in Arabic, which means migration. When the second caliph Umar came to power, this year was established as the first year of the Islamic calendar to commemorate Muhammad's migration from Mecca to Medina in 622 AD, and this calendar is therefore known as the Hijra calendar. Chinese Muslims are customarily referred to as the "Hijri calendar".

Isfeng said that the Lanjiao calendar is purely timed according to the lunar calendar, with one round and one silver of the moon as one month, and twelve months as a year, without considering the time of the earth's revolution around the sun, and there is no leap year. Thus, its year is 354 or 355 days, 11 days less than the Gregorian calendar. Every 32 years or so, there is one more year than the Gregorian calendar.

The time of all religious activities in Islam is calculated according to the Islamic calendar, so if it is calculated according to the Gregorian calendar, the same religious holiday is often about 11 days earlier than the previous year. Then January 1 in the Islamic calendar is also called Hijri New Year. Sudan has a 1-day holiday.

The conversion method between the Islamic calendar and the Gregorian calendar is as follows: 1. Seek the Gregorian calendar: Gregorian year 622 (Gregorian year 622) 32 Gregorian year.

Take 1988 as an example: 1988-622+(1988-622) 32=1988-622 101366 32 1988-622+42 1366+42 1408 (year) Ariah. 2. Ask for the Gregorian calendar:

Ephr 622 Ephris 33 Gregorian year. Take the year 1408 AH as an example: 1408+622—1408 33 1408+622 42 2030—42 1988 (year) Gregorian calendar.