utils logo UTILS
Free online tools to generate, calculate,
convert, format, encode, and play.
 

Timezone Database Browser

Browse the IANA timezone database. Search by region or city, view current times and UTC offsets, and compare multiple timezones side by side.

Timezones

Compare Timezones

No timezones selected for comparison. Browse timezones and click "Compare" to add them here.

How It Works

IANA Timezone Database

The IANA (Internet Assigned Numbers Authority) timezone database, also known as the Olson database or tz database, is the standard source of timezone information used by most operating systems and programming languages. Each timezone is identified by a region/city format such as America/New_York or Asia/Tokyo.

Tip: This tool reads timezone data directly from your browser's Intl API, which uses the IANA database built into your operating system.

UTC Offsets & DST

UTC (Coordinated Universal Time) is the global time standard. Each timezone has an offset from UTC, expressed in hours and minutes (e.g., UTC+05:30 for India). Many regions observe Daylight Saving Time (DST), shifting clocks forward by one hour during summer months.

Note: Offsets shown are current. They change when DST transitions occur.

Major Timezone Regions

Americas

Spans UTC-10 (Hawaii) to UTC-3 (Argentina). Most of North America observes DST.

  • America/New_York (Eastern)
  • America/Chicago (Central)
  • America/Los_Angeles (Pacific)
  • America/Sao_Paulo (Brasilia)
Europe & Africa

Spans UTC-1 (Azores) to UTC+3 (Moscow). Most of Europe observes DST.

  • Europe/London (GMT/BST)
  • Europe/Paris (CET/CEST)
  • Europe/Moscow (MSK)
  • Africa/Cairo (EET)
Asia & Pacific

Spans UTC+3 (Arabia) to UTC+14 (Line Islands). Few Asian countries observe DST.

  • Asia/Tokyo (JST)
  • Asia/Shanghai (CST)
  • Asia/Kolkata (IST)
  • Australia/Sydney (AEST/AEDT)

Related Utils

Timezone Finder Unix Timestamp World Clock

Feedback

Help us improve this page by providing feedback, and include your name/email if you want us to reach back. Thank you in advance.


Share with