Grid instability can cause this in direct grid-sync clocks... but that's mostly those cheap clock-radio things that people mostly don't have anymore. You mostly see them in older hotels now.
Huh this shouldn't happen with direct GPS synced devices, but things like microwaves don't generally have direct GPS... they use regular clock chips (with or without wifi) or grid-synchronization (rare nowadays I think), so they're a degree or two removed from GPS.https://twitter.com/nevali/status/1267764838547238912 …
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I think
@theartlav or@keithmadams might know, but I think cheap devices these days probably use a non-grid clock chip, and if they sync at all, it's over wifi (which is more stably synced with GPS via explicit time calibration signals rather than 60/50hz assumption.Show this thread
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Fun Fact: GPS have the most accurate clocks of any non-Weird-Science device. They literally make microsecond adjustments to compensate for relativistic time-dilation caused by gravity.
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