Is this the same time spoken of as being shortened in Matt 24:22, the time of Satans Tribulation?
Hello again! The seven year period is divided up into two 3 1/2 year periods.
The seven years is initiated when that antichrist makes his covenant for one seven year period - Dan.9:27
The second half of the seven years begins when he causes the sacrifices and offerings to cease and sets up that abomination in the holy place within the temple.
Regarding the time of God's wrath, Jesus said that "if those days had not shortened, no one would be saved, i.e. no one would be left alive on the earth.
And once again, it is not Satan's tribulation, but is the time of God's wrath, which will be carried out via the seals, trumpets and bowl judgments. These are God's plagues of wrath, not Satan's. God just happens to use Satan and his angels to carry out his wrath. As an example of the this, I would draw your attention to the 5th trumpet, where an star/angel is given the key to the Abyss where he releases those demonic beings that resemble locusts and horses prepared for battle, with hair like women's hair and teeth like lions teeth. These are demonic beings that God will use to carry out His wrath.
Another example of this is the 6th trumpet, where the angel (holy) is told to go and release the four angels (Satan's) who are bound at the great river Euphrates. The fact that they are bound tells us that they are fallen angels that have been kept there for that specific hour, day, month and year to kill a third of mankind. The 200 million that those four angels gather, are also demonic beings who through fire, smoke and sulfur will kill a third of mankind.
Regarding the last seven years, this is derived from Dan.9:24 which states that seventy seven year periods have been decreed upon your people and their holy city. It is God's decree, not Satan's! And its purpose is to "stop their transgression, to put an end to sin, to make atonement for iniquity, to bring in everlasting righteousness, to seal up vision and prophecy, and to anoint the Most Holy Place." During this time, God is also going pour His wrath out upon a Christ rejecting world:
"I will utterly sweep away everything from the face of the earth,” declares the LORD. I will sweep away man and beast; I will sweep away the birds of the air, and the fish of the sea, and the idols with their wicked worshipers. I will cut off mankind from the face of the earth,” declares the LORD.
The above will be accomplished via the seals, trumpets and bowl judgments, as well as the by the plagues that the two witnesses cause. By the time the Lord returns to the earth to end the age, the majority of the earths population will have been decimated and all human government dismantled.