Good Friday is a Christian holiday commemorating the crucifixion of Jesus Christ and his death at Calvary. It is observed during Holy Week as part of the Paschal Triduum on the Friday preceding Easter Sunday. It may coincide with the Jewish observance of Passover. Christians believe that the crucifixion of Jesus was a sacrifice for the sins of humanity, and the event is a central aspect of Christian theology, including the doctrines of salvation and atonement.
Different Christian denominations observe Good Friday in various ways, including prayer, fasting, and participation in solemn religious services. Some hold processions or reenactments of the Crucifixion. The atmosphere is one of mourning and penance. In many Christian countries, Good Friday is a public holiday. The specific customs and rituals associated with Good Friday can vary significantly between different cultures and denominations.