The real count for Pentecost falls on Monday, a US holiday called Memorial day.This scripture comes to mind->The Book of Remembrance
16At that time those who feared the LORD spoke with one another, and the LORD listened and heard them. So a scroll of remembrance was written before Him regarding those who feared the LORD and honored His name. 17“They will be Mine,” says the LORD of Hosts, “on the day when I prepare My treasured possession. And I will spare them as a man spares his own son who serves him.