While we are talking about days of visibility, we need to start with Revelation 19:11-21.
“BEHOLD, HE IS COMING WITH THE CLOUDS, AND EVERY EYE WILL SEE HIM, EVEN THOSE WHO PIERCED HIM; AND ALL THE TRIBES OF THE EARTH WILL MOURN OVER HIM. SO IT IS TO BE. AMEN.” - Revelation 1:7