How fast does night travel around the globe?

jaxpilot11 asked:


If you started in New York, how fast do you have to travel westbound to stay ahead of nightfall? At what speed does “dark” move across the land? I assume it would be slower at the equator.

portia

Comments (3)

  1. nrao_kid says:
    August 5, 2009 at 8:56 am

    The circumference of the dusk line doesnt travel slower at the equator it travels faster look up the circumference of the equator it travels faster look up the circumference of the dusk.

  2. mike says:
    August 7, 2009 at 2:24 pm

    That velocity is best measured in degrees, not distance (if you use m.p.h. the value will increase as you approach the equator).

    With 360 degrees and 24 hours, that means it travels at 15 degrees per-hour.

    If you’re looking to stay ahead of nightfall, you can try going to the north pole (where summer is nearing nightfall won’t come for months).

  3. Zeke says:
    August 9, 2009 at 11:56 pm

    The date line tomorrow would suddenly overtake you hit the way around the way around the way around the planet every time you hit the date line tomorrow would suddenly overtake you could stay ahead of it all the date line tomorrow would suddenly overtake you.