15 Sha'ban 1372 AH From sunset on Tuesday, April 28 to sunset on Wednesday, April 29, 1953. Laylat al-Bara'at, the night of the 15th of Sha'ban. Mid-Sha'ban (Arabic: نصف شعبان, romanized: niṣf šaʿbān or ليلة نصف مِن شعبان laylat niṣf min šaʿbān "night on the half of Sha'ban") is an Islamic holiday observed by Shia and Sunni Muslims on the eve of 15th of Sha'ban (the night following the sunset on the 14th day of the eighth month of the Islamic calendar). In Twelver Shia Islam, it is particularly significant as the birthday of Muhammad al-Mahdi, the twelfth Imam, traditionally believed to have been born on 15 Sha'ban 255 AH (868 CE). The night is marked by prayers, supplications, charity, and religious gatherings. Some communities also celebrate a similar holiday on this night called Shab-e-barat (lit. 'Barat Night') or Laylat al-Bara’ah (Arabic: ليلة البراءة). It is celebrated in many South Asian, Central Asian, Southeast Asian and West Asian countries. Wiki link Dates: Saudi Arabia's Umm al-Qura calendar (via hijridate, MIT). Local moon sighting can put a day a day later. Text: Wikipedia (CC BY-SA).