It is not a set period of time. However long Christ is on the earth, will be the greatest tribulation of all time. You do not know, either, because you claim the Second Coming is after an alleged period of time. Jesus is telling us that when He is here, it will be the greatest of all tribulations. No one can know when it starts, because the arrival is unknown. The 7th Trumpet is when it is over and finished.Ok, so you don't even know what the great tribulation period is?
That would explain your inability to answer my question.
thank you for taking the time.
Your ability to make such a claim means you know the day Jesus comes, something only God knows. All can know the day and hour of the battle of Armageddon. That is not the Second Coming. The battle of Armageddon is on a Sunday in September between 5pm and 6pm. The day before Yom Kippur, September 20, 2026.