The sun, Earth and Mars will form a perfect line.
'Mars will be at its brightest and most visible on Tuesday night, with the Red Planet near its closest point to Earth and directly opposite the sun. The “opposition” of Mars means it will be visible all night long, starting in the east after sunset and climbing high overhead before setting in the west around sunrise.'
https://www.washingtonpost.com/weather/2020/10/13/mars-bright-opposition/?
