Our World Clock allows you to build a personalized dashboard of cities. You can add or remove locations to see their current local time, date, and whether it is day or night, all at a glance.
How a world clock works
A world clock uses the IANA Time Zone Database to determine the correct offset for each city from UTC. It accounts for daylight saving time transitions, historical timezone changes, and regional variations. The current UTC time is obtained from your device's clock (which is synchronized via NTP), and each city's local time is calculated by applying the appropriate offset.
Common uses for a world clock
Remote teams use world clocks to check colleague availability before scheduling calls. Travelers use them to call home at appropriate hours. Financial traders monitor stock exchange opening and closing times (which happen sequentially around the globe). Event planners use them to schedule webinars and conferences that maximize attendance across time zones.