Ramadan follows the lunar calendar, causing its start date to shift approximately 11 days earlier each year. Ramadan comes to an end this weekend with the celebration of Eid al-Fitr.

Ramadan began at sundown on Feb. 28, and ends at sundown on March 30, according to the Islamic Society of North America. The monthlong fast concludes with the celebration of Eid al-Fitr, meaning ...