timekeeping

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#timekeeping

The Ancient Greek Water Clock That Kept the Most Accurate Time for 1,800 Years

Hacker News Top · 6h ago

The article discusses an ancient Greek water clock that maintained exceptional accuracy for 1,800 years, highlighting its historical significance.

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#timekeeping

Atomic Clocks

Hacker News Top · 2026-07-31 Cached

An educational explainer from NIST describing how atomic clocks work, why atoms provide extremely stable timekeeping, and the role of quantum physics and light in measuring time.

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#timekeeping

I wanted a clock that never needed setting. Things escalated.

Ars Technica · 2026-07-23 Cached

A tech enthusiast documents building a custom self-setting LED clock using a Raspberry Pi, 3D printing, and open-source software, after being frustrated with existing options.

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#timekeeping

No leap second will be introduced at the end of December 2026

Hacker News Top · 2026-07-09 Cached

The IERS Bulletin C confirms that no leap second will be added at the end of December 2026, maintaining the current UTC-TAI difference of -37 seconds.

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#timekeeping

Ask HN: Are systems ready for the first negative leap second?

Hacker News Top · 2026-07-06 Cached

Discussion on Hacker News about whether computer systems are prepared for the first negative leap second, with comments debating the risks and alternatives like leap minutes.

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