Good Friday is a Christian tradition to mark the day when Jesus Christ, the son of God, was nailed to the cross. This is often known as crucification of Lord Jesus.
It was on this day that Jesus was beaten and tortured because he claimed to be the son of God. A crown of thorns was thrust upon his head. Then, he was forced to carry his own cross to the on top of a hill, where he was nailed to the cross. Jesus suffered for hours and the sky turned dark as if mourning. Christians across the world celebrate this day to remember sacrifice of Lord Jesus. Some do so by fasting, some take part in procession that carries a cross through the streets.