Based on the lunar cycle, the Islamic Calander consists of 354 days begining in 622 A.C.E. - the year the Prophet Muhammad immigrated to Medina from Mecca.
Recited five times per day, the call to prayer beckons Muslims to the mosque.
Prior to the printing press, Islamic calligraphy as an art form was used to preseve and protect the integrity of the Qur'an. Islamic Calligraphy is also used to represent God, as the representation of God through images is strictly forbidden within the Islamic Tradition.