Maybe because there were mountains or something else obstructing the true vanishing of the sun. Look into it, out of curiosity, you may be surprised, that's how it went for myself.
Planes travel along a PLANE. Coriolis effect only applies to firing a bullet and not planes landing??? It is all quite obvious once you accept it. Just like learning the twin towers were dropped by demolition fifteen years ago. Hard to fathom at first.
There is no doubt in my reality that the earth is MOTIONLESS and FLAT.
One must be asleep to believe we are on a sphere spinning at 1000 mph, rotating the sun at 67 000 mph with absolutely zero feeling to this movement.