As noted by an earlier poster, light meters can have difficulty especially reading shadows to set the exposure, but I have had success in shooting night scenes of cities by turning the zone system on its head. There is often enough light to spot meter important highlights, so I take a reading of these, place this reading on Zone VII or VIII, and let the shadows look after themselves. Some shadow areas will print black, and some highlights like streetlights may be paper white, but after all, it is a night scene and I think that inky black shadows and blown specular highlights are acceptable. It is surprising, though, how much detail is printable. Just don't forget about reciprocity failure or use a film like Acros that is not significantly affected by reciprocity failure.