[mooism2]

It makes calendar UIs more complex. I mean, I live near Greenwich, so telling me I've got to clean the house next Wednesday is fairly unambiguous, but if I lived in Sydney and we were using UTC there would all of a sudden we two days you could be referring to.

[Osiris]

Are you suggesting that Wednesday wouldn't only start at 00:00 UTC but that each place would make up its own start time for the weekdays? Doesn't that defeat the purpose of getting rid of timezones?

[mooism2]

I am suggesting that Wednesday would continue to run from midnight to midnight, but in a world where "midnight" means "midnight UTC" rather than "midnight in an appropriate local time zone", the block of time occupied by Wednesday would be less useful. I am concluding that having the entire world use UTC as its local time is not practical.

See also California, when the day of the week would change while you were at work in the afternoon.

(Did you mean for your comment to be in reply to sxp or zanny, not me?)

[tsotha]

>See also California, when the day of the week would change while you were at work in the afternoon.

Bah. I live in California and that already happens.

[zanny]

That is only for the transitional period. What you would want to do is have a point in time where everyone internationally switches their date, hour, and second to match UTC at once. It might take a week for people to adjust, but really after that everything is so much smoother. I don't see it making much sense to try to use local time zones and UTC in tandem, which is the main reason it isn't catching on now, even though it makes more sense.