No good where I live for Satellite spotting, too much light pollution, so I save it for when I'm at Mum's place in North Norfolk.
Last time I was up there I watched a satellite whiz past (with help from heavens above) then googled up and read all about its history. Turned out it was launched in the seventies by the yanks, plus loads of other info I can't remember. Magic. (well, to an anorak like me it is).