In my mind, these two things are settled.
1. No man knows the day or hour.
Mark 13:32 "But about that day or hour no one knows, not even the angels in heaven, nor the Son, but only the Father.
2. We will ALL KNOW when Jesus returns.
Matt. 24:30-31 At that time the sign of the Son of Man will appear in heaven, and all the tribes of the earth will mourn. They will see the Son of Man coming on the clouds of heaven, with power and great glory. And He will send out His angels with a loud trumpet call, and they will gather His elect from the four winds, from one end of the heavens to the other.
And the rest... only God knows. I find great comfort in these two facts.