The Islamic holy month of Ramadan is right around the corner.
Muslims all over the world will take part in fasting, prayer, and charity to mark the occasion. However, unlike other religious holidays many people may be familiar with, Ramadan does not start on the same day each year.
This is because the Islamic calendar is determined by the cycle of the moon. To make matters more complicated in knowing when Ramadan starts, different institutions may give slightly different dates depending on local practices, traditions, and predictions of the moon cycle.