Some of my many interests include Railways and Clocks, so i think it is appropriate to include this demonstration of the iconic Swiss Federal Railway's Clock.

This is my interpretation of the function of the final clock design from 1953 with a sweep stopping second hand and jump minute hand.

In 1944 the Swiss Federal Railways (SBB) tried to improve the punctuality of their train services by synchronizing the clocks on all railway stations to one master clock, this was achieved by sending time signals via the telephone network to each clock, in 1953 the second hand was added, this was synchronized by running it a little fast by about 1.5 seconds every minute then stopped at the 12 o'clock position to wait for the time signal before advancing the minute hand and resuming.