1 of 4The Longest Night
This panorama was shot at about 23:40-23:45, and the middle photo (of three) was taken just as the sun hit the lowest point it will ever hit during the year from this location, -54°06'17", which can be compared with the lowest point it hits during the night following the longest day, -7°14'07". The difference is close to exactly twice Earth's axial tilt - with some allowance for the change in distance to the sun. Ignoring the change in distance, it would be exactly twice, as it is the tilt that causes the difference. In other words, this is as dark as it gets: None more black.