Pentecost Sunday (Catholic / Christian Protestant)
Pentecost is known by Christians as the birthday of their church community. The word Pentecost is Greek for “50th day.” It is celebrated fifty days after Easter Sunday, to commemorate when the Holy Spirit came upon the Apostles and their followers, inspiring them to begin their Earthly ministry to make disciples of all nations.
More Information from the Catholic Church
More information from the Christian Methodist Episcopal Church