[time-nuts] Re; New Wrist watch

[Tom Van Baak]

> Bob;
> 
> Being this is Time-Nuts and all, shouldn't you be using UTC anyway? ;)
> 
> Rich

> He's making a joke - If you are traveling across time zones, why not 
> just set it to UTC and be done with it?  :-)
> 
> David

Ah, "done with it" you say? No, that only begins a whole new set of problems. Setting to UTC begs the question: what time frame are you in and whose definition of a second is your watch counting.

Traveling across timezones with a good clock brings you interesting problems, at the sub-microsecond level at least, due to earth rotation and latitude and due to relativistic effects of altitude and velocity.

/tvb