This suggests that a week away from midsummer, Reykjavik gets three hours of notional darkness a night, with the sun setting only 40 degrees away from where it comes up again. The definition of civil twilight is when the sun is less than 6 degrees below the horizon, and Bergen was still achieving that for three hours of the night while I was there, so, actually, it shouldn't ever get much darker than that last photo. Nice!