What is a world clock?
A world clock shows the current local time in several cities at once. It uses the IANA time zone database (the same data your operating system and browsers use), including daylight saving rules.
Default cities
London (Europe/London), New York (America/New_York), Los Angeles (America/Los_Angeles), Chicago (America/Chicago), Toronto (America/Toronto), São Paulo (America/Sao_Paulo), UTC, Lagos (Africa/Lagos), Dubai (Asia/Dubai), Karachi (Asia/Karachi), Dhaka (Asia/Dhaka), Kolkata (Asia/Kolkata), Bangkok (Asia/Bangkok), Singapore (Asia/Singapore), Shanghai (Asia/Shanghai), Tokyo (Asia/Tokyo), Seoul (Asia/Seoul), Sydney (Australia/Sydney) and Auckland (Pacific/Auckland).
Planning meetings
Pick a slot that falls in working hours for every office. For converting one specific date and time between two zones, use the timezone converter.
Accuracy
Times come from your device clock via the JavaScript Intl API. If your system clock is wrong, these clocks will be wrong by the same amount.
Frequently asked questions
Can I add my own city?
Yes. Enter an IANA name such as Europe/Berlin or Pacific/Honolulu and press Add.
Do the clocks follow daylight saving?
Yes, through the IANA database built into your browser.
Why is my city missing?
Search the IANA list (for example Asia/Kathmandu) and add it.
Is the time fetched from a server?
No. It is calculated locally from your device clock.
What does UTC mean?
Coordinated Universal Time – the baseline for civil time zones.
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