In our free booklet, “The Meaning of God’s Spring Holy Days,” we explained the following:
“The Church of God and the Orthodox Catholic and Protestant world may… at times observe Pentecost on the same Sunday. But this is merely coincidental. There are many years when the Church of God and the Orthodox Christian world celebrate Pentecost on different days. Why? Because the Church of God determines the correct date for Pentecost by counting 50 days from the Sunday [after the weekly Sabbath], which falls within the annual Holy Days of Unleavened Bread, as instructed in the Bible (Leviticus 23:11).
“The wave sheaf was offered on the Sunday during the Days of Unleavened Bread. The wave sheaf pictures Jesus Christ, who ascended to heaven on a Sunday, even though He was resurrected on Saturday evening, just around sunset. Exactly 50 days later, He poured out the Holy Spirit from God the Father on His New Testament Church. This was the Day of Pentecost.
“In other words, we are not to count 50 days from the weekly Sabbath that falls within the seven Days of Unleavened Bread, but from the SUNDAY on which the wave sheaf was offered—and it is that SUNDAY, that…