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title: 「うるう秒」ってなに？（国立天文台）
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# 「うるう秒」ってなに？（国立天文台）

## TL;DR
（要約なし・原文はリンク先を参照 / No summary available; see the source link.）

## Key Points
- (なし)

## Details
(本文なし。リンク先参照)

## Source
元記事: [「うるう秒」ってなに？（国立天文台）](https://www.nao.ac.jp/faq/a0403.html)