INTERACTIVE: Ramadan 2018 and fasting hours around the world
Number of fasting hours varyies by country depending on time between sunrise and sunset, which changes subject to latitude and longitude
As Ramadan begins on May 17, many countries are set to fast with shorter hours than past years as the holy month falls just before the long - and hotter - summer months this year.
The number of fasting hours vary by country depending on the period of time between sunrise and sunset, which changes subject to latitude and longitude.
Fasting is compulsory for any sane and healthy Muslim who is not pregnant or travelling. Those who fast are not allowed to eat, drink, smoke, or have sex from sunrise to sunset during the month.
As usual, Muslims in Iceland are looking at the longest fasting days at 20 fasting hours, while those in Argentina are set for a shorter fast at 11 hours.