Pentecost Sunday is an important day in the Christian calendar that commemorates the descent of the Holy Spirit upon the Apostles and other followers of Jesus Christ while they were in Jerusalem celebrating the Feast of Weeks, as described in the Acts of the Apostles. It is seen as the birth of the Christian church and the beginning of the missionary activity of the Apostles. Pentecost falls on the seventh Sunday after Easter.

1. Pentecost Sunday