Dhaka, March 1 -- Saudi Arabia announced on Friday that the holy month of Ramadan will commence on Saturday, March 1, after the sighting of the Ramadan crescent moon in the Kingdom. With this confirmation, more than 1.8 billion Muslims worldwide will begin fasting from sunrise to sunset each day.Ramadan falls in the ninth month of the Islamic lunar calendar, which consists of 12 months in a year of 354 or 355 days.Fasting during Ramadan is one of the five pillars of Islam and is considered mandatory for all healthy Muslims. However, exemptions are made for young children, the sick, travellers, and women who are pregnant, nursing, or menstruating.For thousands of years, Muslims have followed the tradition of searching for the crescent moon t...