Easter is the celebration of Jesus' resurrection. The date of Easter varies from year to year, according to a lunar-calendar dating system. The Easter season extends from the Easter Vigil (Saturday night before Easter) through Pentecost Sunday.
Ascension Thursday, which celebrates the return of Jesus to heaven following his resurrection, is the fortieth day of Easter, but, it may be observed the following Sunday.
The season of Easter is the high point of the Christian church year, lasting not a day but a full week of weeks. The season is an extended feast wherein the paschal candle is lit at every service as a sign of the risen Christ.
Alleluia! Christ is risen!
Christ is risen indeed! Alleluia!