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Fucking Time Propagation (lemm.ee)

submitted 2 months ago* (last edited 2 months ago) by [email protected] to c/[email protected]

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Just bought the GWM 5610U-1C. It was a tough decision choosing between the DW5600 and this, ended up choosing this because the atomic time keeping is cool.

However, I'm a tad annoyed that the time doesn't perfectly match with time.gov and time.is since the atomic sync doesn't account for time propagation, so there's like a fraction of a second delay that's noticeable. Other than that, the watch is fantastic and has most features I would want. (I wish it had barometer and altimeter stuff, maybe even compass, and dive rated so I can press buttons underwater)

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[–] [email protected] 1 points 2 months ago

It's actually a ways north of Denver outside of Fort Collins. The signal is interesting, even has flags for daylight savings time, leap seconds, leap years.

https://www.nist.gov/pml/time-and-frequency-division/time-distribution/radio-station-wwvb/wwvb-time-code-format

Pretty amazing, the simplicity and robustness of this time signal. I'll deal with a microscopic time lag versus having to mash buttons and twiddle crowns to set the time.