Rabi' al-awwal

During this month, numerous Muslims observe Mawlid - the birthday of the Islamic prophet, Muhammad. Despite the fact that the specific date is unknown,[1][2] Sunni Muslims accept the date of birth of Muhammad to have been on the twelfth of this current month, though Shia Muslims trust him to have been conceived on the beginning of the seventeenth day. 

In the Ottoman Empire days, the name of this current month in Ottoman Turkish was Rèbi' ulèvvèl,[3] with the truncation Ra.[4] In present day Turkish it is Rebiülevvel.

"Rabi" signifies "spring" and Al-awwal signifies "the first" in Arabic language, so "Rabi' al-awwal" signifies "The main spring" in Arabic language. The name appears to have to do with the festival occasions in the month as "spring" is the conclusion to winter (image of bitterness) and therefore the beginning of bliss. The Arabic schedule being lunar schedule, the month is normally pivoting over years and Rabī' al-awwal can be in spring or some other season once in a while, so the significance can not be identified with the genuine season.