Chinese calendar by mountain peoples. After Qin Shi Huang unified China under the Qin dynasty in 221 BC, the Qin calendar () was introduced. It followed most of the rules governing the Zhuanxu calendar, but the month order was that of the Xia calendar; the year began with month 10 and ended with month 9, analogous to a Gregorian calendar beginning in October and ending in September. The intercalary month, known as the second "Jiǔyuè" (), was placed at the end of the year. The Qin calendar was used into the Han dynasty. Emperor Wu of Han introduced reforms halfway through his
Ramadan (calendar month) Ramadan (calendar month) Ramadan (Arabic: ) or Ramadhan is the ninth month of the Islamic calendar, and the month in which the Quran was revealed to the Islamic prophet Muhammad. Fasting during the month of Ramadan is one of the Five Pillars of Islam. The month is spent by Muslims fasting during the daylight hours from dawn to sunset. According to Islam, the Quran was sent down to the lowest heaven during this month, thus being prepared for gradual revelation by Jibreel (Gabriel) to Muhammad. Therefore, Muhammad told his followers that the gates of Heaven would be open for the