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One timezone from the full IANA database. See the current time at a place you have never thought about.
The IANA timezone database is the definitive record of how every region on Earth keeps time. Maintained by a small group of volunteers coordinated through the Internet Assigned Numbers Authority, the database tracks every UTC offset, every daylight saving transition, and every historical change back to the earliest reliable records. Your browser ships a complete copy. This tool draws from that built-in dataset with zero external requests, selecting one timezone at random and showing you the current local time at that location, live and ticking.
Before 1884, every city set its clocks by local solar noon. A train traveling from New York to Chicago crossed dozens of incompatible local times. Sir Sandford Fleming, a Canadian railway engineer, proposed dividing the world into 24 standard zones at the 1884 International Meridian Conference in Washington. Delegates from 25 nations agreed, establishing Greenwich as the prime meridian and creating the system of hourly offsets that still structures global timekeeping today.
The world never quite fit into 24 neat slices. Nepal operates at UTC+05:45, the only sovereign nation offset by 45 minutes. India's single timezone (UTC+05:30) spans a geography wide enough for two, meaning sunrise in the northeast arrives nearly two hours before the far west. The Chatham Islands east of New Zealand use UTC+12:45. And the Line Islands in Kiribati run at UTC+14, placing them a full day ahead of neighboring Baker Island at UTC-12, even though only a few hundred kilometers of ocean separate them.
Modern browsers ship the entire IANA timezone database as part of the ECMAScript Internationalization API. The call Intl.supportedValuesOf('timeZone') returns every recognized timezone string, typically 400 or more entries. Each entry drives toLocaleString to compute the correct local time, including daylight saving transitions, without any network request. This page sends nothing to any server. Your browser resolves every timezone, every offset, and every local time entirely from its built-in data.
Timezones bring geography and mathematics together. Have each student generate a random timezone and compute how many hours ahead or behind it is from your classroom. Plot all discovered timezones on a world map. Which regions appear most often? (The IANA database has more entries for regions with complex DST histories.) Calculate the maximum time difference between any two students' timezones. The tool requires no accounts and stores no student data.
The timezone data comes from your browser's built-in Intl API. The server delivers this page. Your browser resolves every timezone name, offset, and local time locally. No timezone selection ever leaves your device.
Send the link. Each visitor discovers their own random timezone.
Daily Inspiration
Jury-selected work from the A' Design Award, presented fresh each morning.
