During my nightly ritual of looking up stars with an app called Star Walk I noticed 2 very odd lights, very high up, apprx 50k-75k ft. I can guess this because I live a few miles south and east of Miami International, there are planes landing and taking off all the time and I was able to get a plane at flying altitude as a comparison. Using the Star Chart app I confirmed it was not Cassiopedia and no other visible stars were at this location. Two lights.. One bright white with another just beside it slowing drifting due east.. Watched with my dad as they very very slowly moved east until they were gone. Not very dramatic but I am certain they weren't planes.. Definitely not stars.. With all the light polution in Miami they were incredibly bright and any planets and stars would have definitely shown up on the star chart.