DST may be bad, but discrete (as opposed to continuous) time zones are not. Having decent-sized economic and social zones where clocks don't change at all is ex

DST may be bad, but discrete (as opposed to continuous) time zones are not. Having decent-sized economic and social zones where clocks don't change at all is extremely useful, and is in fact the main reason time zones were invented. I sure don't want to have to think about a few minutes of time difference between Oakland and Sacramento, after all.