Time Zone Converterv1.0.0

The converter pairs a calendar date with a wall-clock time in the chosen source zone, resolves that moment to an absolute instant in time, and renders it in the target zone using the IANA time zone database that ships with the browser. Daylight saving transitions are honored automatically: converting 02:30 on a spring-forward date in America/Los_Angeles, for example, produces a result that reflects the actual offset on that calendar day rather than a fixed eight-hour shift.

1. Pick a From zone and a To zone from the dropdowns. The dropdowns group entries by region (UTC, North America, Europe, Asia, Australia and Pacific, and so on) and label each with its short abbreviation and DST behavior.
2. For a zone outside the dropdown, open the Custom IANA zone disclosure and type an identifier such as Pacific/Tahiti or Indian/Mauritius. A non-empty custom value overrides the dropdown for that side.
3. Select the date that anchors the conversion. The default is today.
4. Choose 12-hour or 24-hour mode. In 12-hour mode, set AM or PM next to the hour and minute. In 24-hour mode, the AM/PM control is hidden.
5. Click Convert to produce the result. The Converted Time region shows weekday, full date, time, and the short zone abbreviation resolved for that date (PST or PDT, GMT or BST, and so on).
6. Click Swap Zones to reverse direction without retyping the time. The headings, labels, and conversion table all flip.
7. Click Reset to clear inputs and saved local-storage state and to restore defaults (from UTC, to America/Los_Angeles, 12-hour mode, today's date).

The Real-Time Clock panel runs continuously and shows the current moment in both selected zones, so the live offset is visible without converting a specific value. The Hourly Conversion Table inside the disclosure lists every whole hour of the selected source date and its target-zone equivalent in both 12-hour and 24-hour notation. Internally each row is built by treating the hour as a wall-clock value in the source zone, resolving it to UTC, and formatting that instant in the target zone, so DST jumps appear as duplicated or skipped hours where they actually occur. Saved inputs persist across visits in local storage, so reopening the page restores the last zone pair, date, time, and mode automatically.

Coordinating across time zones is a routine task for distributed teams, content publishers, support staff, broadcasters, travelers, and anyone scheduling work across hemispheres. Because this converter uses real IANA zones rather than a single hard-coded offset, it stays correct through the spring-forward and fall-back weekends that historically cause the most missed meetings.

• Distributed engineering: Translate a Europe/London incident timeline to America/Los_Angeles for the on-call engineer waking up at 06:00 PT, then swap to map their fix back to UTC for the public status page.
• Product launches and webinars: Convert a 10:00 launch in America/New_York to Europe/Berlin, Asia/Kolkata, and Australia/Sydney to draft regional invites without doing the offset math by hand.
• Customer support coverage: Map a follow-the-sun rotation by converting UTC ticket windows to America/Chicago, Europe/Dublin, and Asia/Singapore shift hours for the selected day.
• Travel planning: Take a flight departure listed in Europe/Paris and convert it to Pacific/Auckland to know what local time you will land into and message family from.
• Broadcast and live events: Convert a 20:00 UTC sports kickoff to America/Sao_Paulo and Asia/Tokyo viewer-local times for a watch-party announcement.
• Cron jobs and pipelines: Verify that a 03:15 UTC nightly job lands in America/Denver office hours on Monday and outside them on Saturday by stepping through the hourly table.
• Education and academic deadlines: Submit assignments specified in Europe/London while working from Asia/Bangkok and confirm whether the cutoff falls on the next calendar day locally.
• Finance and trading windows: Align a New York open (America/New_York 09:30) with Asia/Hong_Kong and Europe/London desk shifts during weeks that span a DST boundary.
• Family scheduling: Pick a call time across Pacific/Honolulu, America/Chicago, and Europe/Athens by converting each candidate hour and picking the one inside everyone's waking range.