this post was submitted on 06 Oct 2024
34 points (92.5% liked)

Watches

2070 readers
2 users here now

For watch enthusiasts to discuss everything related to watches and horology.

founded 2 years ago
MODERATORS
Akimoto@lemmy.ml
Cal@lemmy.ml
34
Fucking Time Propagation (lemm.ee)
submitted 1 month ago* (last edited 1 month ago) by pineapplelover@lemm.ee to c/watches@lemmy.ml
23 comments fedilink hide all child comments
 

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)

you are viewing a single comment's thread
view the rest of the comments
[–] lud@lemm.ee 2 points 1 month ago

To determine how long the signal took to arrive you would need to know the exact distance it traveled and its propagation speed.

I posted this elsewhere in this thread but you don't actually need to know the distance if you do some clever stuff. Like NTP does. Dr Julian explains it pretty well in this video.