Online Clock
Display the current time in a full-screen digital format with time zone support.
Online Clock
Display the current time in a full-screen digital format with time zone support.
About the online clock
Initial server time sync
On load, the clock sends one HEAD request to the current page, reads the server Date header, and compensates for half of the round-trip latency. If the request or header is unavailable, the offset stays at zero and the clock continues with device time instead of interrupting the display.
Time-zone aware display
The selector includes local time, UTC, and common IANA time zones such as New York, London, Taipei, Tokyo, Sydney, and Auckland. The analog clock, digital time, date, weekday, and UTC offset all update to the selected zone. You can also step through zones by offset with ‹ ›, or jump with the Local / UTC buttons.
Analog, digital, or both
Choose an analog clock, a large digital clock, or both displays together. Single-display modes use the full available area, and your choice stays active when entering full screen.
Full-screen presentation use
"Enlarge view" at the top right works on phones and desktops: it fills the window with the clock and tucks away the other controls, ideal for personal displays, projectors, classrooms, and meeting rooms. When the browser supports native full screen (desktop), "Full screen view" can take over the entire screen. The page does not store time-zone activity.
FAQ
Common questions and answers about this topic.
Is this online clock accurate?
When the page loads, the clock attempts to sync with server time and compensate for network latency. After a successful sample it updates every second with the measured offset; if the sync is unavailable, it continues using your device time.
Can it show the time in other countries or time zones?
Yes. In the time zone panel, use ‹ › to step through zones by offset, or tap the city name to pick UTC, Tokyo, New York, London, and other common zones from the list; "Local" switches back in one tap. The clock, digital time, and date all convert to the selected zone.
Is my time or time-zone activity uploaded anywhere?
No. Apart from a single request to the server on load to sync the current time, all display and time-zone conversion happens inside your browser. No usage data is stored or uploaded.
Can I make it full screen for a meeting room or classroom clock?
Yes. The "Enlarge view" button at the top right fills the window with the clock and works on phones too; on desktop browsers that support it, "Full screen view" takes over the whole screen. Enlarged, only the clock itself remains; press the button again or Esc to exit.