Impact of rotation of the Earth on time travel [closed]

During the flight of Dallas - Sydney, will the rotation of Earth have its effect, as the flight is going in the same direction as Earth Rotation.

As compared to Sydney - Dallas flight which is going in the opposite direction of the Earth rotation.

air-travel

Best Answer

Depends on what exactly you mean by "time".

Time spent in the air: that is indeed a function of direction, primarily because of the prevailing winds. For example BOS->SFO is about half an hour longer than SFO->BOS. The prevailing winds are indeed partially caused by the earth's rotation.
Difference in local time: You gain or lose time by crossing time zones. In the example above, you gain three hours from BOS to SFO and you lose them again on the way back. BOS-SFO takes 6 hours in the air but it's only 3 hours in local time difference. Flying from Shanghai to San Francisco you arrive actually 3 hours before your departure. A 12-hour flight and 15-hour time zone difference.
Relativistic time shifts due to speed differences: that theoretically exists but is way way way too small for any meaningful impact. See link in the comments.

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Does Earth rotation affect travel time?

The rotation of the Earth has no direct significant effect on flight times in either direction.

What happens to time if Earth stops rotating?

The apparent motion of the Sun comes from Earth's rotation, so if the planet were stationary, it would cause a single day to last half a year long (though we could look forward to some very long-lasting sunsets). Without the 24-hour days we're used to, biological circadian rhythms would be thrown entirely out of whack.

Does Earth's Rotation affect the Airplanes Speed \u0026 Flight Time

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