Astronomy Clock
About the Astronomy Clock
An astronomy clock is a reading clock for sky events you care about, shown next to the current time. It is a planning aid. It is not a telescope controller.
How to use it
- Open the Astronomy Clock page and let the display initialize with your local system time.
- Choose 12-hour or 24-hour format if the page offers a format toggle for your region.
- Adjust theme color, size, and seconds visibility to match the room and viewing distance.
- Click fullscreen in the header when presenting on a projector or second monitor.
- Keep the tab visible or disable auto-sleep on wall-mounted tablets for continuous display.
Good to know
The clock shows your device time. If the computer clock is wrong, this page will be wrong too. It is a display, not a certified time source for legal or broadcast use.
Frequently asked questions
What is the Astronomy Clock?
It is a browser-based astronomy clock on TimerClock with live updating time and theme controls matched to this style.
Is the Astronomy Clock free?
Yes. Core clock features are free and do not require an account.
Does it work on mobile?
Yes. Modern phone and tablet browsers display and update the clock responsively.
Can I use fullscreen?
Yes. Use the fullscreen control in the header for projectors and TVs.
12-hour or 24-hour format?
Supported variants let you pick familiar 12-hour AM/PM or 24-hour format where the profile allows.
Related
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