I have very strong feelings that time should never "shift". Beyond that, I'm not certain that I care what the standard is. I have a slight preference for keeping "noon" to mean "when the sun is at its highest point", so that midnight could also keep its generic "middle-of-the-night" meaning too. Maybe I just need to learn to divorce those definitions from 12 o'clock, and assign them to some other time on the clock.

Reducing the 8-hour workday and the 9-to-5 (or 8-to-5) standard would also help a lot.