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What Time Is It at the Poles?

Discussion in 'Science and Technology' started by SalixIncendium, Nov 6, 2022.

  1. SalixIncendium

    SalixIncendium Vestigial Member
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    Lines of longitude (or meridians) measure distance around the Earth. They are also used to measure time, though they are sometimes manipulated around borders of countries.

    Time varies around the Earth based on what lines of longitude they are between. All lines of longitude meet at both he North Pole and the South Pole? So what time is it at the poles?
     
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  2. VoidCat

    VoidCat Pronouns: any and all including it/it's and neo

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    4:22 AM at the north pole according to Google as of typing this...
     
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  3. VoidCat

    VoidCat Pronouns: any and all including it/it's and neo

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    Wait that's the time in a city in alaska not the north pole you talking about...
     
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  4. VoidCat

    VoidCat Pronouns: any and all including it/it's and neo

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    I found this:
    From:
    What time zones are used at the North Pole and South Pole? | BBC Science Focus Magazine
     
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  5. Stevicus

    Stevicus Veteran Member
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    upload_2022-11-6_6-29-21.png
     
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  6. Viker

    Viker Spirit in Black

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    I wasn't sure myself.

    Time Has No Meaning at the North Pole

    "At the North Pole, 24 time zones collide at a single point, rendering them meaningless. It's simultaneously all of Earth's time zones and none of them. There are no boundaries of any kind in this abyss, in part because there is no land and no people."
     
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  7. exchemist

    exchemist Veteran Member

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    While time of day has no meaning, it is untrue to say time has no meaning.

    And there are still the seasons of course, at the poles, dramatically so.
     
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  8. Shaul

    Shaul Well-Known Member
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    It's Santa Claus time, of course.

    But seriously, I would assume it is UTC.
     
  9. Audie

    Audie Veteran Member

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    Daytime
     
  10. Revoltingest

    Revoltingest Abnormal before it was fashionable
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    Sometimes.
     
  11. Audie

    Audie Veteran Member

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    Maybe twilight now
     
  12. Shaul

    Shaul Well-Known Member
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    If it is daytime at one pole is must be nighttime at the other.
     
  13. Vinayaka

    Vinayaka devotee
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    Nobody in their right mind would live there anyway, so who cares? It would affect flights some, I think. Our flight from Seattle to Dubai went almost directly over the North Pole, so assume we switched from AM to PM within the space of an hour.
     
  14. Polymath257

    Polymath257 Think & Care
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    In practice, people use whatever is convenient: usually determined by who they want to communicate with regularly.

    Otherwise, Universal time, UTC, could be used or Julian days (which are common in astronomy). Both of those are continuous (no jumps for daylight savings). And, in fact, all local times are defined relative to UTC.
     
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  15. RestlessSoul

    RestlessSoul Well-Known Member

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    At the solstice. But what about the equinox?.
     
  16. Shaul

    Shaul Well-Known Member
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    At any time. If one pole is in daytime the other must be in night. At the precise moment of the equinox both poles experience exactly half daylight and half non-daylight, which is night. That is the half of an object at the pole at that moment would be facing the sun and half would be shaded from the sun by its other half. It is a boundary moment that is neither day nor night. Just as noon is not in the morning nor the afternoon and midnight is not in the evening nor morning.
     
  17. Alien826

    Alien826 Older than dirt

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    It's whatever time you choose. In my case, dinner time!
     
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  18. Revoltingest

    Revoltingest Abnormal before it was fashionable
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    The Sun isn't a point source of light.
    Its enormous size means during the equinox,
    both will experience daylight, albeit with Mr
    Sun partially peeking up on the horizon.
     
  19. RestlessSoul

    RestlessSoul Well-Known Member

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    Well at the equinox, the tilt of the earth is neither towards nor away from the earth, so there'd be no difference in terms of daylight and darkness. While day and night would be of equal length almost everywhere on earth, at either pole there'd be no division between light and dark, at least not one marked by the hours on a clock. Nor would one pole be in darkness while the other was lit, as would be the case on the solstice.

    Presumably there'd be simultaneous sunrise and sunset for 24 hours at either pole during the equinox.
     
  20. exchemist

    exchemist Veteran Member

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    Yes the sun will be be half-set at both poles and will make its way, in that state, round the horizon.
     
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