Its been tried... I actually had a watch with it built into it once.
everyone I tried to convert to it used to look at me funny and back away: https://en.wikipedia.org/wiki/Swatch_Internet_Time
everyone I tried to convert to it used to look at me funny and back away: https://en.wikipedia.org/wiki/Swatch_Internet_Time
throw in some phone widgets and outlook addins and the world will make it work I'm sure