For over a year now, a special and unique electric clock has been in operation in one of the windows of L’Éclaireur in Nice. Thanks to a most ingenious device, this timer keeps time to the second on a daily basis.
We cannot provide a detailed description here of this remarkable device, which is the work of Mr. Antony Jacques, the skilled clockmaker of Avenue Georges-Clemenceau.
Suffice it to remind our readers that every morning, in the summer at 11:45 a.m. and in the winter at exactly 10:45 a.m., the official time of the Paris Observatory is recorded on our clock as follows:

At 11:45 a.m. At 44' 45", the clock's large hand jumps 15 seconds and awaits the "Tick" sent from the Eiffel Tower, before restarting at exactly 11:45 a.m. During this waiting period, the entire clock lights up, and at the start of the hour, a synchronized bell rings, also giving the correct time.

Our photograph shows the inventor and his son, Mr. Georges Jacques, listening to the wireless set installed in their shop on Rue Clemenceau. The standard "Tick" is sent to the clock on L'Éclaireur via a special overhead line, which serves as a link between the Eiffel Tower and L'Éclaireur in Nice.

And a century later :

Allouis: The transmitter remains the master of clocks; it will continue to broadcast legal time in France for ten years. No fewer than 200,000 receivers in France are synchronized to this legal time. This applies to transportation, trains, and airplanes, but also to the activation of street lighting and even the time on parking meters.