In one of them 12noon approximates solar noon better than in the other. Some people object to that because it interacts with the magic social numbers 9 and 5 i

In one of them 12noon approximates solar noon better than in the other. Some people object to that because it interacts with the magic social numbers 9 and 5 in a way they find inconvenient. By contrast, in most places where I've lived, I have found that daylight savings time less convenient than the one which approximates the astronomical situation.