Your Calendar in Multiple Time Zones at Once

Perfect Clock shows your calendar events on world clock timelines of your cities. Every meeting lines up with the local time in all your cities, so you see your whole schedule at a glance, without time zone math.

Add capitals and major cities or search for any place in the world, set working hours for each city and connect Google Calendar read-only. Use it in the browser or as a Chrome extension in the side panel. Free, with no account and no ads — your data stays in your browser.

Or open one of the public calendars below: market hours, sports and launches on the timelines of your cities, many with Polymarket odds.

Public calendars

Calendar sections