Ramadan is the ninth month of the Islamic lunar calendar, during which Muslims fast from food and drink during daylight hours. It is a month for spiritual purification and focus on God through prayer, acts of faith, and self-sacrifice. Strict observance of the fast is required, including abstaining from food, drink, smoking and sexual relations during daylight hours. The fast is broken each evening with a meal called iftar, followed by visiting family and friends. Ramadan commemorates the first revelation of the Quran to Muhammad. It concludes with the Eid al-Fitr holiday marking the end of fasting.