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Aviation Watches? Well, after some 25000 hours of flying, I would say that the most important thing is the time be accurate. And by accurate, I mean in an absolute sense, generally synchronized to one of the several HF radio time signals (ex: WWV or CHU), or to the GPS constellation. For reference, I would direct those with more interest to the ICAO document NAT Doc 007, the North Atlantic Operations and Airspace Manual, section 8.2.2. The North Atlantic is still procedural controlled (ie non-radar), and relies on accurate time of position reports to establish aircraft separation, and so (in my mind), sets the standard for aviation timekeeping. To conveniently accomplish this, I have relied for a number of years on Casio's excellent Waveceptor series of radio controlled watches. They set themselves to the atomic clock in Colorado (or Britain, Germany, China Japan) every night. They get my highest recommendation. Pick one that is easy to read, digital, while uglier is bett...