How long do Muslims fast around the world?

Muslims in many parts of the world are marking the Islamic holy month of Ramadan.

It is regarded as the most sacred month in the Islamic calendar, when Muslims say extra prayers at night and fast from dawn to sunset if they are in good health.

Countries near the equator have the shortest fasting time, while Muslims in the northern hemisphere have to wait longer to break their fast because of the long summer days. 

 bbc