What is Ramadan and how do Muslims observe the Islamic holy month?

FILE - Muslim girls carry torches during a parade to celebrate the eve of Eid al-Fitr, the holiday marking the end of the holy fasting month of Ramadan, in Polewali Mandar, West Sulawesi, Indonesia, April 21, 2023. FILE - Worshippers perform a night prayer called 'Tarawih' during the eve of the first day of the Muslim holy fasting month of Ramadan in Turkey at the Hagia Sophia mosque in Istanbul, Turkey, March 22, 2023.

Observant Muslims the world over will soon be united in a ritual of daily fasting from dawn to sunset as the Islamic holy month of Ramadan starts.