World clock and meeting planner

Shows the current time in each place you add, with its offset from UTC, and marks where it is already tomorrow or still yesterday.

Lays one day out hour by hour in every place and highlights the hours that fall inside everyone's window: working hours, waking hours, or hours you set.

Times come from the IANA time zone database, the standard record of the world's time zones and their summer-time rules, as your browser carries it. Each place takes the zone of the city its airport serves.

The day shown is the first place's calendar day, from its midnight to the next: 24 hours on most days, 23 on the day its clocks go forward and 25 on the day they go back. An hour counts as shared only if all of it falls inside the window in every place, so a place half an hour off (India) or three quarters of an hour off (Nepal) is judged on its own clock.

The rules are only as current as your browser's copy of the time zone database, and governments sometimes change them at short notice.

Each place takes the time zone of the city its airport serves. In the few places that keep a local time different from the official one, check that the zone shown is the one you mean.

Working hours and weekends differ by country and by person; the window is yours to set.