holidays
Earliest possible day on which Pentecost can fall, while June 13 is the latest; celebrated 50 days after Easter Day. (Christianity)

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Pentecost
Christian holy day
Pentecost is a Christian holiday that takes place on the 49th day after Easter. It commemorates the descent of the Holy Spirit upon the Apostles of Jesus, Mary, and other followers of the Christ, while they were in Jerusalem celebrating the Feast of Weeks, as described in the…Source: Wikipedia (CC BY-SA)
May 10
Day of the year
May 10 is the 130th day of the year in the Gregorian calendar; 235 days remain until the end of the year.Source: Wikipedia (CC BY-SA)
Easter
Christian commemoration of the resurrection of Jesus
Easter, also called Pascha or Resurrection Sunday, is a Christian festival and cultural holiday commemorating the resurrection of Jesus from the dead, described in the New Testament as having occurred on the third day of his burial following his crucifixion by the Romans at…Source: Wikipedia (CC BY-SA)
Christianity
Abrahamic monotheistic religion
Christianity is an Abrahamic monotheistic religion, which states that Jesus is the Son of God and rose from the dead after his crucifixion, whose coming as the messiah (Christ) was prophesied in the Old Testament and chronicled in the New Testament. It is the world's largest and…Source: Wikipedia (CC BY-SA)