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A comment on Converting a $3.88 analog clock from Walmart into a ESP8266-based Wi-Fi clock. Parent comment

Re:Converting a $3.88 analog clock from Walmart into a ESP82... by crote on Tuesday February 10, 2026 @01:27AM (#46956064)
The obvious answer is to use a Raspberry Pi as a GPS-disciplined NTP server, of course. Place it near the window or fully outside, depending on GPS signal strength.

That gives you another weekend project, and you can reuse your DIY NTP wall clock!

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Re:Converting a $3.88 analog clock from Walmart into a ESP82... by ssl-3 on Tuesday February 10, 2026 @01:49AM (#46956179)
That never quite solves the auto-timezone/DST issue that OP wants to have work, though, does it?

If I am interpreting their request correctly, they want a wall clock that knows where it is -- and also knows what localtime is in that position on the globe.

GPS (plus some hairy lookup tables) can accomplish that.

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Re:Converting a $3.88 analog clock from Walmart into a ESP82... by toast0 on Tuesday February 10, 2026 @02:34AM (#46956489)
DHCP has an option for timezone information. Not a lot of people fill it out, though.
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