The descent of the Holy Spirit upon the Apostles fifty days after Pascha, marking the full revelation of the Holy Trinity and the beginning of the Church’s mission in the world. During Vespers, special kneeling prayers are offered and the church is adorned with greenery. This feast celebrates the completion of Christ’s saving work and the outpouring of the Holy Spirit upon all believers. From this day forward, the Sundays of the year are numbered from Pentecost, signifying the continual life and growth of the Church in the grace of the Spirit.

A Divine Liturgy celebrated in conjunction with the sacrament of baptism. The newly baptized person participates in their first communion immediately after baptism and chrismation. This liturgy emphasizes the connection between baptism, chrismation, and the Eucharist as the sacraments of initiation into the Orthodox Church.