Australia, Northern Territory, your ship has finally come in. If you travel, there are basically three ways to keep track of time (four, I suppose, if you count being on vacation and disdaining to wear a watch at all, which has its own compelling logic). These are, viz., wearing an ordinary watch, wearing a GMT...

The newest Richard Mille Worldtimer takes a novel approach to a classic complication. While there are an enormous number of ways to do a dual time, or GMT, complication, the design vocabulary for almost all world time watches is based on a design from the 1930s – specifically, on the design created by Louis Cottier...