How time zone meeting planner works
Planning a meeting across time zones means finding a single instant that lands in reasonable hours for everyone. This planner takes a proposed date and time in your host time zone, resolves it to an absolute instant, and formats that same instant in each attendee’s local time using the IANA time zone database — which knows each zone’s UTC offset and daylight saving rules for any date.
Each attendee’s local hour is labelled with a convenience category: work (inside your working-hours window), early (before work but awake), late (after work but before bed) or night (asleep). You set the working-hours window; the defaults are 08:00–18:00.
The planner also scans every candidate start hour of the same date in your host zone and scores each by how many attendees fall inside working hours, so you can pick the slot that inconveniences the fewest people. Always use full IANA names like America/New_York rather than abbreviations like EST, which are ambiguous.