Angular Momentum

[[Man sits on his bed, looking at a girl who is spinning. It is night.]] Man on bed: What are you doing? Girl: Spinning counterclockwise Each turn robs the planet of angular momentum Slowing its spin by the tiniest bit Lengthening the night, pushing back the dawn Giving me a little more time here With you {{title text: With reasonable assumptions about latitude and body shape, how much time might she gain them? Note: whatever the answer, sunrise always comes too soon. (Also, is it worth it if she throws up?)}}