How to calculate Eid al-Adha every year?

Generally speaking, it is1February 10 in the solar calendar, which is different from the commonly used Gregorian calendar. So in the calendar with the sun as the main movement, time is not fixed, sometimes in summer and sometimes in winter. The solar calendar is divided into solar calendar and lunar calendar. The solar calendar for agriculture is 365 days or 366 days a year, which is basically the same as the Gregorian calendar.

The lunar calendar is used for teaching, with 354 or 355 days a year, which is always ten days away from the cycle of the four seasons. The algorithm is to subtract 1 1 from the date of the last Eid al-Adha, which is the time of the next Eid al-Adha. For example, the last Eid al-Adha festival was August 1 1, minus1is July 3 1.

If you think this calculation method is complicated, you can compare it with the calendar, which is relatively simple.

The origin of Eid al-Adha:

Legend has it that a long time ago, the prophet Ibrahim, the ancestor of the people in northern Arabia, dreamed of Allah at night and was inspired by Allah to go to Mina Valley to kill his son and sacrifice for Allah to test his loyalty to Allah.

When Ibrahim took his son to Mina Valley to kill his son Ismail, God saw Ibrahim's piety and awe, and sent an angel to replace the sacrifice of Ibrahim's son. This is the origin of Eid al-Adha. Since then, every year on this day, the Arab people will regularly slaughter sheep and sacrifice according to this legend, and follow the custom.