On this Friday preceding Easter Sunday, Christians and friends throughout the world commemorate the suffering and death by crucifixion of Jesus Christ. Many Christians engage in fasting, acts of charity, silent contemplation, and reflection on Scripture on this day. For Catholic Christians, though this is not a Holy Day of Obligation, it is set apart with strict fasting, abstinence, and attention to fasting, almsgiving, and prayer. Good Friday" is also known as "Holy Friday", "Great Friday", "Black Friday", and "Easter Friday". It is the first day of the Paschal Triduum of Holy Week.