jarvisbox

World Clock

See the current time in multiple cities and time zones simultaneously.

How to use

  1. The clocks update automatically every second using your device's system clock — no server requests needed.
  2. Each card shows the city name, current time in HH:MM:SS format, today's date in that timezone, and the IANA timezone identifier.
  3. Use this tool to schedule meetings across time zones or check if a remote colleague is within working hours.

Related tools

Frequently Asked Questions

Is this world clock accurate?
Yes. The times are derived from your device's system clock using the JavaScript Intl API with IANA timezone data — no network request is made.
Does it send any data to a server?
No. Everything runs in your browser — your current time and location are never transmitted.
Does it work on mobile?
Yes. Works in Safari, Chrome, and Firefox on iOS and Android.

Last updated:

Report a problem with this tool