The Islamic calendar, also known as the Hijri calendar, is a lunar calendar consisting of 12 months in a year of 354 or 355 days. It is used primarily to determine the dates of important events in the Islamic faith, such as Ramadan, the month of fasting, and Eid al-Fitr, the festival marking the end of Ramadan. Each month begins with the sighting of the new moon, making it different from the solar calendar used in most of the world. The Islamic calendar starts from the year of the Hijra, which marks the migration of the Prophet Muhammad from Mecca to Medina in 622 CE. This calendar is significant for Muslims as it helps them observe religious practices and festivals