The Great Tribulation lasts seven years. If it starts in late 2017 or early 2018 it will end in late 2024 or early 2025. Jesus comes back to end the Tribulation and establish His Kingdom on this Earth at that time.
In post #4 you state: The Great Tribulation starts near the end of 2017 and Jesus returns in 2025.
You didn't say "about" or "perhaps" or "maybe." So, I ask you again, what specifically is your source of information for these dates?