> 6PM local time could mean Zulu+6 or Zulu+3 or anything else if local timezone offset changes via legislation. That’s the point. Normal people think about tim

> 6PM local time could mean Zulu+6 or Zulu+3 or anything else if local timezone offset changes via legislation. That’s the point. Normal people think about time based on their local time. If they agree to meet someone at 3pm on a day in the future, that normally means turning up on that day when a local clock on that day reads 3pm. If local time changes offset from UTC, then the meeting implicitly also changes. I’ve personally yet to meet someone that reschedules all their appointments every time day light saving (or the inverse) rolls around. Just make sure their appointment times in UTC don’t change.