Would living above arctic circle in summer time and below antarctic circle in “winter time” affect sleep negatively?

Would living above arctic circle in summer time and below antarctic circle in “winter time” affect sleep negatively?

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(Here's a related question, but that's on Travel, so it doesn't have a scientific focus, which is what I'm interested in.)

I've made the question a bit extreme in the title, but I'm more accurately referring to the idea of

  • staying at a fixed longitude and a fixed time-zone¹,
  • changing latitude fairly gradually during the year so as to maximize the hours the sun is up during the day,
  • keeping a "normal" sleep schedule regardless of the sun, let's say going to bed at 23:00 and waking up at 7:00, obviously using opaque curtains at the windows appropriately,

and my question is whether living according to this scenario would affect physical and mental health. And, if it does, how.

I know that scenario is not realizable exactly because

  1. given a longitude, changing the latitude gradually from +90° ot -90° is impossible (unless we want to live on a boat at times), and
  2. time zones are not wedges between two meridians.

However I see that between 23°E and 30°E the timezone is almost always +2, so that would be a good longitude for the mental experiment described above.

My understanding is that the problem at extreme latitudes is represented by the absence of the sunlight during daytime, which beasically means that one would live a long time per day (the whole day when beyond either circle) in the complete/partial darkness, which could be balanced only by artificial light. And I've heard/read that's not good.

However, in the scenario I depicted above, there would be no lack of sunlight and, during the sleep time, one would just have to keep the windows closed.

I don't see how this could impact at all the health, as once the curtains are closed, it doesn't matter what the sun is doing outside. There could be also two of them. Or light and darkness could alternate once a minute by virtue of magic, and I wouldn't know, as I'd be isolated from it by the curtains.

I'm interested in an answer with some technical scientific references.

I've searched myself on scholar, but I haven't found much.

(¹) The reason I'm specifying a fixed time-zone is to make clear the times I'm mentioning in the 3rd bullet point are always the same moment at all latitudes.


  1. Moogule

    interesting temka, adult)

  2. Royal

    Should you tell it - a false way.

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  4. Illias

    Yes, I understand you. In it something is also to me it seems it is very excellent thought. Completely with you I will agree.

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