Why is it called Good Friday before Easter?

Answer 1

Because it's the day that Jesus died on the cross, so it is called good because he did it so all our sins could be forgiven.

Actually He could not have died on Friday because The Bible says He was dead three days and three nights. That would not be possible between Friday and Sunday.

Actually the Jesus says in the Bible that on the third day he will rise, not three days and nights.

additional information comes from "the advent" Catholic encyclopedia:

From the earliest times the Christians always kept every Friday as a day to feast/gather; Friday which marks the anniversary of the Christ's death; came to be called the Great or the Holy or the Good Friday. The origin of the term Good is not clear. Some say it is from "God's Friday" (Gottes Freitag); others maintain that it is from the German Gute Freitag, and not specially English. Sometimes, the day was also called Long Friday by the Anglo-Saxons.

Answer 2

Easter Friday is not called Good Friday. Easter only starts two days after Good Friday. Although the term is never really used, Easter Friday would be the Friday after Easter Sunday, a week after Good Friday. As to why Good Friday is called Good Friday, there are various ideas. See the related question below.

Answer 3

It is called Good Friday because, through Our Lord's passion and death, the gates of Heaven were opened to us. We were redeemed through the Blood of the Lamb of God.