What particularly annoys me about timezones is that times are already useless. When does the day start? (And I mean the normal cultural day, not your personal day.) Be it 7am, 8am, 9am, or whatever your answer may be, it sure isn't anything sensible like 0 or 1. If those are anything, that's when the day ends. If the sun rises at 03:00 in one place, 10:00 in another, and 22:00 in another (presumably we'd stop using "am" and "pm" as the a & p would become useless), who really cares? It's not like we're taking away the 00:00 sunrise that you can set your watch by from anybody.