I watched, they used jet streams on video, but also they used to get info from night time to find a constellations for knowing which jets on Flightradar may be

I watched, they used jet streams on video, but also they used to get info from night time to find a constellations for knowing which jets on Flightradar may be ignored. This is not very relevant, because I want to know if it is possible to calculate a location if I know a precise time and an angle of Sun/Moon right now from observer's position.