Rabī’ al-Thānī () is the fourth month in the Islamic Calendar. It is also known as Rabī` al-Ākhir ().
The Islamic calendar is a lunar calendar, and months begin when the first crescent of a new moon is sighted. Since the Islamic lunar calendar year is 11 to 12 days shorter than the solar year, Rabī' al-Thānī migrates throughout the seasons. The estimated start and end dates for Rabī' al-Thānī are as follows (based on the Umm al-Qura calendar of Saudi Arabia):
10 Rabī’ al-Thānī, birth of the Head of all Sufi Chains, SheikhAbd al-Qadir al-Jilani. Sufi Muslims celebrate his anniversary called Urs by making nice foods and conducting Meelads at homes and Mosques.