Lol, this was EXACTLY my high school sr. year social studies project in 1980, with roughly the same effort (sadly, I didn't create a working clock). I won first place, with just this. The only difference is I named the metric units 'mints.'
Or if your system works with 2 rotations per day use a regular clock.
Wouldn't this actually be confusing, because things would have to be happening at different local times depending on where you are in the time zone?
In Europe and China you have timezones spanning over 3 "sun" timezones. In practice that means the sun rising and setting at different times. People are used to have the sun setting late or rising early depending where they live.