Fullscreen clock FAQ

Where does the time come from?

The clock uses your device’s time. Choosing a different time zone changes the displayed local time for that zone while using the same device clock.

How accurate is the time?

Accuracy depends on your device clock; this site does not synchronize with a time server. If the time is wrong, check your device’s date, time and automatic time settings.

Are my settings saved?

Clock preferences and each face’s appearance are saved in this browser. Clearing site data or using another device or browser does not retain those settings automatically.

How do I enter fullscreen on a phone or tablet?

Select Fullscreen in the header. Supported browsers use native fullscreen; others use an immersive page layout. Whether the address bar can disappear depends on the mobile browser. Use the exit button to return, or press Esc on a computer.

Why does the screen still turn off with screen-awake enabled?

Keeping the screen awake requires Screen Wake Lock support and a foreground fullscreen page. Enable the option in Clock settings and check the activation message. Switching apps, hiding the page or leaving fullscreen releases the request. The page reports unsupported browsers or failed requests.

How can I install the clock on my desktop or home screen?

Open Install & offline in Clock settings. Browsers with an installation prompt can install directly; on iPhone or iPad, use Add to Home Screen from Safari’s share menu. Availability depends on the device and browser. Installation is optional for using the web clock.

Does the clock work without an internet connection?

Open it online first and confirm offline resources are ready in Install & offline. A browser supporting Service Worker can then reopen cached faces, languages and guide pages offline. External source links still need a connection. Clearing site data or browser cache eviction requires online preparation again.

Does it include alarms, a countdown or a Pomodoro timer?

It currently shows the time, with no alarms, countdown, Pomodoro timer or scheduled notifications. Use it to follow your own study or meeting schedule. Set a separate timer or alarm if you need an end reminder.

How do I show the time in another region?

Choose the region’s time zone in Clock settings and enable the date and zone label to check for a different local date. The current face shows one selected zone at a time. This converts device time and does not synchronize or correct the device clock.