Astrology

Why? Einstein said all time is relative, don't make one zone absolute. It was bad enough when Magellan went round the world and couldn't understand why everybody else was a day wrong in their calendar. What are the space station astronauts going to when they come home after 6 months and their UTC isn't the same as everyone else's?

MOST people don't have anything to do with timezones. MOST people have difficulty (including programmers) dealing with timezones.

As per Einstein time depends on the observer. And how many systems do you know, with historic time data, that have no concept of time zone? Most of them? The ONLY special time zone is the one you're in. And it's only special because YOU ARE THE OBSERVER.

Just define time as being 24 hours a day, clock time as the time from the preceding midnight OF INTEREST (so a night shift can quite happily end AFTER midnight eg 30:00 hours), and a full unambiguous spec is "local time T zulu offset" with NO guarantee that local time is less than 24:00 or that zulu offset lies between -12:00 and +12:00. The ONLY thing you guarantee is that if you normalise time, the day will move to correct time to the *expected* 24 hours. And on request time zone will normalise to zulu.

Cheers,
Wol