- Ramadan is not a city, but rather a religious observance observed by Muslims around the world. It is the ninth month of the Islamic lunar calendar during which Muslims fast from sunrise to sunset. The exact dates of Ramadan vary each year depending on the sighting of the moon, and it lasts for 29 or 30 days. Muslims fast during this month to practice self-discipline, increase their spiritual connection with God, and show empathy towards those less fortunate. While there are many cities with significant Muslim populations that observe Ramadan, there is no specific "Ramadan city."