Years ago Stansted had a white rotating jobber. A pain in the eyeballs when trying to get some kip on a night shift. I remember a Channel Airways Comet (that dates me) calling up for the weather and reporting "Field in sight". As he wasn't due for some time I asked where he was. "Overhead Zurich, FL360" or some such high level. To which I replied, "Report downwind lefthand for 23". It was a crystal clear winters night. Apparently he could also see the Cambridge beacon. Happy days.