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Older people always remind me to change my clocks for Daylight Saving Time. (lemm.ee)
submitted 3 months ago by Freshparsnip@lemm.ee to c/casualconversation@lemm.ee
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I haven't used a clock in years that I need to manually reset. Older people don't seem to realize clocks on phones and other devices reset automatically.

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[-] gandalf_der_12te@discuss.tchncs.de 18 points 3 months ago

Here in germany i think there's a radio signal being transmitted on a dedicated frequency that does nothing but distribute the current time information to digital devices. It's really useful!

[-] rc__buggy@sh.itjust.works 17 points 3 months ago

It's everywhere, but not all devices have the radio

[-] Onomatopoeia@lemmy.cafe 8 points 3 months ago* (last edited 3 months ago)

That's existed since at least the 60's, maybe even earlier.

And electric clocks used to get their timing from the frequency of the electrical system, and power companies would compensate for any daily variations by changing the frequency over night so any timing systems would be back in sync.

Commercial buildings often used these kinds of clocks.

[-] gandalf_der_12te@discuss.tchncs.de 3 points 3 months ago

Are you sure you're talking about the same thing as me? Sounds like devices use the 50/60 Hz grid frequency instead of an internal resonator/frequency generator to count forward the seconds. But it doesn't tell the device "what time is it now" when you first switch it on.

[-] running_ragged@lemmy.world 7 points 3 months ago

Huh. That does sound pretty damn useful.

https://en.m.wikipedia.org/wiki/DCF77

Id never even heard of it in Canada.

[-] adarza@lemmy.ca 9 points 3 months ago

don't worry. i got chu.

[-] xorollo@leminal.space 4 points 3 months ago

America/US?

[-] CosmicCleric@lemmy.world 9 points 3 months ago* (last edited 3 months ago)
[-] xorollo@leminal.space 2 points 3 months ago

Wow! So much nerdy information! I love it! See y'all next year✌️

[-] corsicanguppy@lemmy.ca 2 points 3 months ago

Canada had that up to last year.

this post was submitted on 10 Mar 2025
121 points (86.7% liked)

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