In Islam, celebration is a form of thanking Allah, the One True God. Celebration, in Islam, is merry-making, visiting and meeting friends and relatives and having clean fun, and also a form of physical and spiritual purification.
Islamic celebrations include taking a bath, putting on clean or new clothes, wearing perfume and going to the mosque or a place of congregation for Salat, a form of prescribed prayers. The Islamic celebration of Eid is also a day when children and adults may get new clothes and gifts.
The dates and days of celebration are set according to the Islamic calendar.