2

Mumbai to London - 10:05

London to Mumbai - 08:45

Is this because of earth's rotation?

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[-] frongt@lemmy.zip 3 points 1 month ago

Yes, indirectly. Area lit by the sun is heated, and unlit area cools, and this temperature difference causes global air currents, called the jet stream. Planes can ride this current to reduce flight time and fuel consumption between two points, or must fly upwind to go the other direction, which takes more time and energy.

https://en.wikipedia.org/wiki/Jet_stream

The physical rotation of the earth only affects wind current on smaller scales, causing sub-continent-sized disturbances and swirls in the larger currents, which is where we get hurricanes.

[-] ogeist@lemmy.world 1 points 1 month ago

Oh I always thought it was the rotation itself, great info!

Is this the same stream that makes Europe have a different temperature than North America?

this post was submitted on 21 Nov 2025
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