I was wondering about how to speed up time because I was bored, so I considered rotating my body clockwise (in the northern hemisphere) in order to speed up the rotation of the earth by creating angular momentum opposite to that of the earth. I was thinking that this would then speed up the velocity of everyone on the earth and thus make time progress faster for them. However, on further investigation into general relativity, I realized that I am not completely sure that a change in the rotational speed of the earth would have the intended effect, or any effect, on the time dilation on the earth relative to an observer outside of the earth's rotation and gravitational field. I understand that these velocity changes and time dilations would be ridiculously small and negligible but I am just interested in the theoretical effects. Thanks!