Timezone Converter
Convert time between different timezones worldwide. See the current time in any city instantly.
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🌍 World Clock
About Timezones
The world is divided into 24 primary time zones, each roughly 15 degrees of longitude apart. Time zones are anchored to Coordinated Universal Time (UTC), with each zone offset by a certain number of hours — and sometimes 30 or 45 minutes. Understanding how timezones work is essential for international communication, travel planning, and scheduling meetings across borders.
What is UTC?
UTC (Coordinated Universal Time) is the global time standard from which all other time zones are calculated. It replaced Greenwich Mean Time (GMT) as the official reference in 1960. Unlike GMT, UTC is based on atomic clocks and is not tied to a specific geographic location, making it the most precise standard for synchronising time worldwide.
Common Time Zone Abbreviations
- UTC: Coordinated Universal Time (base reference)
- EST/EDT: Eastern Standard/Daylight Time (UTC−5/UTC−4)
- PST/PDT: Pacific Standard/Daylight Time (UTC−8/UTC−7)
- GMT: Greenwich Mean Time (UTC+0)
- CET/CEST: Central European Time (UTC+1/UTC+2)
- JST: Japan Standard Time (UTC+9)
- IST: India Standard Time (UTC+5:30)
- AEST: Australian Eastern Standard Time (UTC+10)
Daylight Saving Time
Many countries observe Daylight Saving Time (DST), moving clocks forward by one hour in spring and back in autumn to make better use of natural daylight. Not all countries participate — most of Africa and Asia do not observe DST. Our converter automatically accounts for DST based on the IANA timezone database, so you always see the correct current offset.
Military Time Zones
The military uses a letter-based system to designate time zones, from Alpha (UTC+1) through Mike (UTC+12) and November (UTC−1) through Yankee (UTC−12). "Zulu" refers to UTC+0 and is widely used in aviation and maritime communication to avoid ambiguity.
Frequently Asked Questions
Yes! The converter uses the Intl API which automatically handles DST transitions based on the IANA timezone database.
UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. It's essentially the same as GMT but is the official standard used for international timekeeping.
Some countries chose offsets that better align with solar time for their specific geographic location. Examples include India (UTC+5:30), Nepal (UTC+5:45), and parts of Australia.