April 3, 2015 in lunar calendar or commonly called Gregorian calendar. How does other sects or groups of religion celebrate or commemorate this day?
Roman Catholic Church traditionally they're going to a solemn place for fasting and meditation. The others going out together their families for recreation and having a good time with their family.
This about the death of Christ and crucifixion.. Every Month of April they're commemorating the death of Christ as the messiah..