Even the most punctual among us are content ... a completely isolated digital clock that doesn’t rely on external synchronization (well, except to initialize the time at first power-up).

Much like that one, the triple time zone clock is controlled by a single Wemos D1 mini, and the other two panels are chained to the primary board. This version has a frame made of 20/20 extrusion ...

Daylight saving ends on Nov. 3, when clocks get turned back one hour. The switch happens at 2 a.m. local time. So, at 1:59:59 ...