Eid-e-Milad-Un-Nabi, also known as Eid Milad-un-Nabi, is a significant festival celebrated by Muslims worldwide to mark the birth anniversary of Prophet Muhammad. The occasion falls on the third month of the Islamic calendar, Rabi al-Awwal. Shia scholars observe it on the 12th day, while Sunni scholars celebrate it on the 17th day of the same month.