Easter and Its Season:

Easter begins with evening prayer on Holy Saturday. Ends with midday prayer on Pentecost.
Easter is a victory celebration:
A time for all Christians to proclaim boldly their faith in a risen and victorious Savior. For the early Christians, Easter was not merely one day. It was (and is) a whole season that also includes the celebration of Jesus’ ascension. The fifty days between Easter and Pentecost, known as the Great Fifty Days, was the first liturgical season observed in the first three centuries of the church. This fifty-day celebration is a week of weeks, renewed in the last decades by emphasizing the Sundays as being “of Easter.” The season’s length is fitting because we are dedicating one seventh of the year to the Lord’s resurrection.
The First Celebration of Easter:
Is the Easter Vigil, the evening of Holy Saturday. The Vigil includes a service of light, in which fire symbolizes Jesus as the light of the world. The service is designed to take the Christian from the solemnity of Good Friday to the predawn joy of Easter.
Easter is the richest and most lavishly celebrated festival of the Church Year. Congregations may hold a sunrise service, commemorating the surprise of the women visiting the empty tomb of Christ, as well as services that celebrate the resurrection of Jesus Christ. While not as lavish, this joyous and celebratory tone echoes down through the Sundays of the Easter seasons.
40 Days after Easter:
The church celebrates the Ascension of Our Lord, who ascended into heaven not only as God but also as man. The final Sunday of the Easter season, celebrated as Pentecost, was adopted by early Christians to commemorate the first great harvest of believers for Christ (Acts 2:1-41). Thus, Pentecost is the birthday of the Christian Church, as the Holy Spirit came upon the disciples, and they gave their compelling witness about the resurrected Lord. Pentecost is the day of joy in the gifts of the Spirit as He still reaches into our lives, just as He did to the crowds on that first Pentecost: through the apostolic preaching of God’s Word and Holy Baptism.
“THE RESURRECTION OF OUR LORD”