Broadcast Clock

A server-synchronised studio clock, in the browser.

Synchronised to a dedicated time server and corrected for network latency, it reads the same time to the second on every display in the building. Full-screen, with a seconds ring, on-air signalling, a timer and audio metering.

iMedia broadcast clock in on-air mode: 20:09:52 in red seven-segment digits with a seconds ring, an ON AIR sign, a countdown timer and a stereo dBFS audio meter on a black background

Accurate time, clearly displayed

The clock is built around one requirement — that every screen in the building agrees — with the timing tools a live gallery relies on alongside it.

Time-server synchronisation

Locked to a dedicated time server and corrected for network latency, so a wall display and a control-room monitor show the same time to the second — and hold it through a long session, where a device's own clock would drift.

On-air signalling and timer

A full-screen on-air sign driven by a schedule, with manual override, plus a countdown timer and stopwatch for segment and break timing.

Display and metering

A large digital readout with a seconds ring, selectable colour and font, date and time zone. A stereo dBFS meter for quick level checks, and a wake lock that keeps the display from sleeping.

The same broadcast clock in a light theme showing 08:13:47 PM in 12-hour format, with the seconds ring in yellow and on-screen Teleprompter, Minimize and Options controls
Selectable colours and fonts, 12- or 24-hour format, date and time zone.

Where it's used

Questions people ask

How accurate is it?

It stays synchronised to a dedicated time server and corrects for network latency, so multiple displays hold the same time to the second across long sessions — where each device's own clock would gradually drift apart.

Do I have to install anything?

No. It opens in any modern browser and goes full screen. Wall display, control-room monitor, tablet or laptop — nothing to set up.

Is there a teleprompter too?

Yes. The same app includes a voice-following teleprompter with cue marks, mirror mode and separate operator and remote windows.