[hakfoo]

A few years ago, I bought a kit for a network-controlled self-synching clock, mostly as an excuse to practice SMD soldering. It came from a Chinese vendor, and China has only the single time zone, so the firmware was not designed with any sort of time-zone adjustment.

So I had an extremely accurate clock on my desk that was locked to Beijing time.

It was still viable, I just needed to note that it was time to get up for work when the clock said 02:00 instead of 07:00.

With regards to scheduling, we still have to negotiate when a meeting takes place-- "I may work nominally 09:00 to 17:00, but I have another appointment at 13:30", but it would eliminate the phase of trying to disambiguate "do you mean 13:30 your local time or mine?"

If you're using a shared calendar platform, specifying active hours is common anyway.