John and Doves,
Concerning the 7th trumpet, I had it on the Day of Atonement in the 6th year of tribulation.
Revelation 10:7 But in the days of the voice of the seventh angel, when he shall begin to sound, the mystery of God should be finished, as he hath declared to his servants the prophets.
Mystery of God is 70 jubilees. God has ordained a 70 jubilees since Israelis entered the promised land. When the 7th angel sounds the 7th trumpet, God's mystery (70 jubilees) is finished, complete. 70 jubilees is 70 X 49 years = 3430 years. The earth has finally arrived at 3430th year when the 7th angel sounds the 7th trumpet. This is the time mystery of God / 70 jubilees is finished, come to it's completion.
And the reason the 7th angel has to blow the trumpet on Day of Atonement is because God requires Israelis to sound the trumpet on the Day of Atonement to hallow the coming jubilee year. Since the Jews are in exile, 7th angel has taken over their job to sound the trumpet on Tishri 10 to hallow the coming jubilee year which is the 70th jubilee. This is why I believe the 7th trumpet shall be sounded in the 6th year on the Day of Atonement to hallow the 7th year which is the 70th jubilee. Jesus is returning to earth in the 7th year of tribulation which is the 70th jubilee..