Islam has a great influence on the living customs of Algerians. Every September in the Islamic calendar, they celebrate the traditional month of sacrifice-"Ramadan". In Algeria, Muslims also go to Mecca to pray five times every day at noon, afternoon, dusk and evening. Besides, Friday is their Memorial Day. On this day, everyone will go to the mosque for collective worship. After the service, they said "Selan" to each other and left one by one.