I've calculated that periodically they send up a ''flare'' somewhere in the range of 5-10 year , which locates them ~70 years away at the speed Haley travels at.
Haley DOES NOT travel a curvature to return from the same direction , physics doesn't work that way ! They are Haley's comets , different UFO's launched over time.
That is the only answer by the way , it is absolute ! I will try to find some observation footage later , then I might or might not use my relativity skill to tell you which direction relative to the Sun and Earth , they are located ~ .
P.s My calculation is based on their version of time dilation .