It uses the equatorial bulge to process the orbit. https://space.stackexchange.com/questions/5312/why-would-sun-synchronous-orbits-be-impossible-around-perfect

It uses the equatorial bulge to process the orbit. https://space.stackexchange.com/questions/5312/why-would-sun-synchronous-orbits-be-impossible-around-perfectly-spherical-bodies https://space.stackexchange.com/questions/5312/why-would-sun...