Hi John and Doves,
We may not be able to identify 'THE DAY' but we are certainly getting close. Jerusalem will be a burdensome stone for all those who try to burden themselves with her. Zechariah 12:3 in 2nd link below. I have linked the entire chapter of Zechariah 12 in the 3rd link for a reason. Many end of days prophecies talk about 'in that day'. One day! Not 2 or 3 days, or 7 years for that matter! Scripture points to ONE special day of the LORD. Just as Damascus is destroyed overnight. Just as Ezekiel 38 talks about 'on THAT day'.
Our LORD Jesus' ministry lasted 3.5 years. The devil was present on earth during those years. LORD Jesus contended with satan during His ministry. Therefore, the final 1,260 days/ 42 months/ 3.5 years after 'THAT DAY', our precious LORD Jesus will do battle against satan - here on earth. The 144,000 are sealed first. The dead in Christ are resurrected and then 'we who are alive and remain' will be caught up with the resurrected dead to meet our LORD in the sky. 1 Thessalonians 4:17 in the 4th link below.
The final 3.5 years of Great Tribulation will be a battle royale - between LORD Jesus and His armies v satan and his armies. The left behind will NOT be alone but they will have to make great sacrifices.
Zechariah 12:3 KJV - And in that day will I make Jerusalem a - Bible Gateway
Zechariah 12 NIV - Jerusalem’s Enemies to Be Destroyed - Bible Gateway