Lailat al-Qadr is a Muslim observance, also known as the Night of Power or the Night of Destiny.
It commemorates when Koran (Qur’an) was revealed to the prophet Muhammad (also known as Mohammad).
Muslims in the United States celebrate the event, also spelled as Laylat al-Qadr or Shab-e-Qadr, on one of the last 10 days of the Islamic month of Ramadan.