The key word is 'significant' - Earth's rotation certainly does make a difference relative to a non-rotating frame, but it's a very small difference. The Hafele–Keating experiment results were measured in nanoseconds. The total isn't likely to amount to 1 part in a billion over the lifetime of the Earth (4.5 billion years) even if you include gravitational time dilation.I notice you all keep making the same mistake. You claim earths rotational velocity is not enough to affect anything. Then ignore that airplanes, traveling just a few hundred miles per hour faster, had noticeable changes in clock speed in less than 24 hours. This includes the effect of the clocks speeding back up when the planes landed for fuel.
So let me see if I got this straight. A mere few hundred miles per hour is enough to affect measurable changes to clocks in less than 24 hours, but you want everyone to believe a few hundred miles per hour less isn’t enough to affect clocks over the course of thousands of years?
And now let’s add the effects from the curved trajectory from the earths velocity around the sun, and then the effects of the curved trajectory of the sun around the galaxy, and then the speed of the galaxy through space. Unless you are contending the galaxy didn’t need to accelerate to achieve its current unknown velocity?
So I am to believe that a mere change of velocity of a few hundred miles per hour affects clocks in 24 hours, but our current speed won’t over thousands of years? Really?
And yet it must affect clocks, because those clocks speed back up to match earth clock rates when the airplane lands. So a slowing of a mere few hundred miles per hour also causes a measurable change in clock rates. Otherwise they would still tick slower upon landing, which they do not.
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