SphericalZabaione said:
Might be a case of a space jellyfish phenomena from a recent rocket launch?
[...]

it was lasting kinda long for it to have been any brief phenomenon like that, it was an hour or so from initially spotting it, then returning home, and then driving over to try to figure out the source.

also, I don't think the paralax would make sense for it to be anything like that. I was able to go from seeing it about ~30° above the horizon to directly overhead in a matter of a couple miles. (although, I guess that was just the cloud layer reflecting/refracting the light from... wherever)