Please explain why you place the Sixth Seal at Jesus Return? On your 'charts'.
After, or at the Seventh Vial.
In Matthew 24:29, at the end of the tribulation of those days. It is the at, near, the end of the
great tribulation - but not quiet (by 45 days). That's when the sixth seal event happens. The sign of the Son of Man in heaven in Matthew 24:30a. Right before Matthew 24:30b coming down to earth in great power and glory, with the armies of heaven.
tribulation of those days - 1290 day long.
great tribulation = the tribulation of those days (1290 days) +45 days to gather at Armageddon = 1335 days.
The kings of the earth have to have a reason to gather their armies to make war on Jesus, in Revelation 16. They have to be threaten. The threat will be the sign of the Son of Man in heaven, in the sixth seal event, prepared to take vengeance on behalf of them martyred in the fifth seal.
The kings of the earth assemble their armies at Armageddon, march down surround Jerusalem, and packed around the temple mount, where the beast, false prophet, and the great statue image incarnated by Satan will be, the focal point - across from where Jesus will descend to the mount of Olives. Their strategy will be to take half the Jews there in Jerusalem as hostages.
As the last great vial of God's wrath, the 7th vial is poured out on the world, right before Jesus comes with his armies of heaven to earth; His return focused on Jerusalem, the temple mount, and the Mt. of Olives.