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Time Zone List

Searchable list of every IANA time zone with live UTC offset and local time

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What is Time Zone List

Written by Giorgos Kostas. Last reviewed:

Time Zone List is a searchable reference of every IANA time zone (America/New_York, Europe/London, Asia/Tokyo, …) with the current UTC offset and local HH:MM rendered live using the browser's Intl API.

It's the fastest way to pick the right TZ identifier when configuring cron jobs, calendar events, or scheduler rules.

Why use it

  • Pick the right IANA TZ for cron or scheduler configs.
  • Verify a server's current offset.
  • Plan cross-team meetings.
  • Debug DST-related off-by-one hour bugs.
  • Copy canonical IANA names for storage.

Features

  • Every IANA zone (modern browsers)
  • Live UTC offset and local time
  • Keyword filter
  • Intl-powered, no external service
  • Time Zone List is handled entirely in-browser

How to use Time Zone List

  1. Type a keyword. e.g. 'europe', 'tokyo', 'utc'.
  2. Click Run. Matching zones with offsets and local time render.
  3. Copy IANA name. Paste into your config, cron, or API.

Example (before/after)

Filter

europe

Matching zones

Europe/Amsterdam              GMT+1       14:05
Europe/Berlin                 GMT+1       14:05
Europe/London                 GMT         13:05
Europe/Paris                  GMT+1       14:05

Common errors

Using CET / EST abbreviations

Three-letter zones are ambiguous.

Fix: Always use IANA names like Europe/Paris or America/New_York.

DST transitions

Offsets shift around DST dates.

Fix: The live offset shown reflects the current date only.

FAQ

Where do the zones come from?

Intl.supportedValuesOf('timeZone') in the browser (fallback to a curated list).

Do you show the current time?

Yes — each row shows the offset and local HH:MM in 24-hour format.

Does it account for DST?

Yes — offsets are computed with the browser's timezone database.

Is data uploaded?

No — the list is rendered entirely client-side.

Why are some zones missing?

Only browsers supporting supportedValuesOf return the full set. Old browsers fall back to a curated list.

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