Quick question to the long-haulers, I noticed yesterday for example from a couple of flightplans LHR-SFO/LAX traffic was flying quite a long way north (going up to 70N ish).
At this time of year, that far north, presumably it must actually get
dark at this point of the flight (over Greenland / N Canada) before getting light again as the flight heads south into the US again? Assuming a lunchtime LHR departure.
(See this
World Sunlight Map).
So assuming this is the case would any pilots be able to tell me just how dark does it get, is it like a sunset for several hours or are we talking just a glow on the horizon, or complete darkness?
Thanks.