Ramadan is the ninth month of the Islamic lunar calendar during which Muslims fast from dawn to sunset. It is one of the five pillars of Islam and commemorates when the Quran was first revealed to the prophet Muhammad. Fasting is meant to bring worshippers closer to God through increased prayer, reflection, and good deeds. At the end of Ramadan, Muslims celebrate Eid al-Fitr with feasting, gift-giving, and acts of charity. Non-Muslims are encouraged to be respectful of their fasting colleagues during this holy month.