World Clock
Live time in multiple timezones, side by side.
New York (EST/EDT)
Sun, Oct 11
London (GMT/BST)
Sun, Oct 11
Mumbai / Delhi (IST)
Sun, Oct 11
Tokyo (JST)
Sun, Oct 11
The World Clock lets you monitor current times across global financial hubs and metropolitan regions simultaneously. Each location card provides live wall-clock time, relative hour differences compared to your local system clock, and official UTC offsets.
How to Use the World Clock
- Browse the default grid of major global business centers including London, New York, Tokyo, Sydney, Paris, and UTC.
- Use the "Add city" selector to search and add any world city or timezone to your personal dashboard.
- Remove cities you do not need using the delete button on each card.
- Compare the relative hour tags (e.g. "+5h" or "-3h") to immediately know whether a colleague is ahead or behind your local time.
Key Features & Precision
Automatic Daylight Saving Time
Powered by the browser native Intl API to account for seasonal DST clock changes accurately in every jurisdiction.
Relative Offset Calculations
Shows exact hour deltas relative to your personal local time so you do not have to perform mental math.
Unified 12h/24h Preference
Automatically aligns with your global format preference set in the navigation header or Digital Clock.
Persistent City List
Custom city additions and configurations are saved to localStorage and restored upon return.
Common Use Cases
Distributed Remote Teams
Track working hours for team members spread across North America, Europe, Asia, and Australia.
International Business Calls
Check whether overseas clients or suppliers are currently in their regular business hours before calling.
Travel Planning
Monitor the destination timezone in the days leading up to an international flight to prepare for jet lag.
Frequently Asked Questions
How does the World Clock handle Daylight Saving Time (DST)?
DST transitions are calculated automatically via standard IANA timezone databases built into modern browser runtimes, ensuring transitions occur at the exact legal local moment.
What is UTC and why is it included?
Coordinated Universal Time (UTC) is the primary time standard by which the world regulates clocks and time. Having UTC on screen helps engineers, aviation professionals, and financial analysts align cross-border events.
Will my added cities be remembered if I close the tab?
Yes. Your customized city collection is preserved in local browser storage so your dashboard is ready whenever you revisit.