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About this online clock
Features
Live local time that follows your device clock
12-hour and 24-hour display
Optional seconds column
Current date and UTC offset beside the time
Day-progress ring showing morning through night
Fullscreen mode for a distraction-free display
Theme and accent color that match how you like to read
How to use this tool
Pick 12-hour or 24-hour time from the format controls.
Toggle seconds on if you need them; turn them off for a calmer read.
Open fullscreen when you want the clock to dominate the screen.
Switch Light, Dark, or Auto theme from the header if the default feels harsh.
Practical examples
Keep a fullscreen clock visible on a second monitor during a long video call so you never lose track of the hour.
Glance at the UTC offset before booking a call with someone who works on a different calendar.
Prop a tablet on the kitchen counter with seconds hidden so you can check the time while your hands are messy.
Use the day-progress ring as a quiet cue that afternoon is ending before you wrap a deep-work session.
Tips and privacy
Format and seconds preferences stick in this browser — you won’t need to set them again on your next visit.
If the time looks wrong, check your device’s date, time zone, and automatic time settings first; the page mirrors whatever the device reports.
For presentations, hide seconds and enter fullscreen so the display stays calm behind you.
Display preferences (format, seconds, theme, accent) live in your browser’s local storage. XY Clock does not upload them and does not require sign-in.
What usually trips people up
The clock reads from your operating system. A wrong laptop time zone shows up here too.
Fullscreen needs browser support; on some mobile browsers it only enlarges within the tab rather than hiding the address bar.
Auto theme follows your OS light/dark setting. Pick Light or Dark manually if you want it locked.
Frequently asked questions
Can I run this as a 24-hour clock?
Switch to 24-hour mode in the controls. XY Clock remembers that choice in this browser for future visits.
Is there a fullscreen online clock?
Use the fullscreen control on the clock page. It expands the display for presentations, study sessions, or a bedside tablet.
Does this replace my phone’s world clock?
Not really — it shows your local time zone only. For comparing cities, open the World tool and save the places you care about.
Do I need an account?
No. Open the page and the clock runs immediately. Nothing to register or verify.
Why does the day-progress ring matter?
It gives a quick sense of how much of the day has passed without doing mental math on the hour hand — useful when you’re heads-down on work.
Will the clock keep running if I switch tabs?
Yes. The display updates from your device clock whenever the page is active. Background tabs may refresh less often, but the time stays correct when you return.
Accuracy depends on your device clock. XY Clock does not sync time from an external server, so a drifting or misconfigured device will show a drifting clock.