Ramadan is a national celebration that runs for a whole month and is held annually. During this time, the people fast during the day when the sun is up and break their fast when the sun sets and they can party, eat and drink.?Most Muslims fast (avoiding food, drink, sex, cigarettes) from sunrise to sunset throughout the month. Ramadan is generally a time of heightened piety. Muslims who might drink otherwise will often refrain.?The fast can have an effect on schedules with restaurants and shops staying closed during the middle of the day and opening after the fast is broken at sundown. Opening hours for tourism sites may shift as well, closing one hour earlier to allow employees to get home to break the fast.