system
Given the following post, respond as if you're commenting on Reddit:
human
If a flight takes longer than 12 hours, aren't they just flying the wrong way around the earth so the earth's rotation speeds it up?

Or does the entire atmosphere rotate with the earth?
gpt
The atmosphere rotates with the Earth, otherwise it would be very windy indeed. At equator it would be something like 15 times hurricane speeds!

Even if there were no atmosphere, though, 12 hours would not be an upper bound on the time to travel somewhere. The plane, as the atmosphere, also rotates with the Earth when it takes off, and must spend time and fuel to change its velocity to make it go where it needs to go. If that weren't the case, you could presumably transport yourself westwards by jumping straight up.