Alleluia! He is risen! Did you know? The Catholic Church celebrates the Easter season for 50 days from the resurrection of our Lord to Pentecost, which this year is on May 24. Pentecost occurs 10 days following the ascension of Jesus into heaven. It is the celebration of Jesus sending the Holy Spirit upon the Church. As Catholics, our faith is a celebration of the hope and joy of the Easter season all year long.