In the Orthodox church calendar, there are twelve major Christian holidays, called twelve. One of these celebrations is the feast of the Holy Trinity.
The Feast of the Holy Trinity (Day of the Holy Trinity) is the time when the Trinity of the deity is glorified in the Orthodox Church. This is one of the favorite holidays of the Russian people. However, this celebration is not always called the "Day of the Holy Trinity".
In the church charter, there is another name for this holiday - Holy Pentecost. In all liturgical books, the feast of the Trinity is accompanied by just such a name. Why exactly Pentecost? Consistent with the Gospel description, on the fiftieth day after the resurrection of Jesus Christ, the Holy Spirit descended on the holy apostles. This was the appearance of the third Person of the Holy Trinity. It was this day that became the birthday of the Church (the birthday of the Church is another name for the holiday of the Holy Trinity, especially beloved by the people). It turns out that Pentecost is a name that indicates the time of a historical event. Until now, the Day of the Holy Trinity (Pentecost) is solemnly celebrated by the Orthodox Church on the 50th day after Easter.
Another name for the feast of the Holy Trinity is "The Descent of the Holy Spirit on the Apostles." This naming no longer points to time, but to the event itself.
It is also worth noting that the day after the feast of the Holy Trinity is separately dedicated to the Holy Spirit. In the church calendar, it is called that - Spirits Day. According to ancient folk custom, Monday after the Day of the Holy Trinity is called the name day of Mother Earth.
