[29] 
[[月][月 (衛星)]]の[[時刻]]を定めようという動きがあります。

* LST

- [9] 
[CITE[Lunar Standard Time (LST) - What time is it on the Moon?]], [TIME[2023-07-07T12:01:18.000Z]], [TIME[2007-09-07T14:45:07.206Z]] <https://web.archive.org/web/20070907144446/http://lunarclock.org/>
- [8] [CITE[Lunar Standard Time (LST) - What time is it on the Moon?]], [TIME[2023-07-07T12:00:44.000Z]], [TIME[2022-04-08T19:40:34.912Z]] <https://web.archive.org/web/20220408193829/http://www.lunarclock.org/>
- [10] 
[CITE[Lunar Standard Time (LST) - What time is it on the Moon?]], [TIME[2023-07-07T12:01:33.000Z]], [TIME[2007-09-10T20:55:49.220Z]] <https://web.archive.org/web/20070910205228/http://lunarclock.org/about.php>
- [11] [CITE[Lunar Standard Time (LST) - What time is it on the Moon?]], [TIME[2023-07-07T12:02:46.000Z]], [TIME[2007-09-10T01:53:34.225Z]] <https://web.archive.org/web/20070910014901/http://lunarclock.org/what-is-lunar-standard-time.php>
- [12] 
[CITE[Lunar Standard Time (LST) - What time is it on the Moon?]], [TIME[2023-07-07T12:05:11.000Z]], [TIME[2008-05-12T09:33:10.829Z]] <https://web.archive.org/web/20080512093030/http://lunarclock.org/lunar-standard-time-definitions.php>
- [13] [CITE[Lunar Standard Time (LST) - What time is it on the Moon?]], [TIME[2023-07-07T12:05:52.000Z]], [TIME[2007-09-12T16:36:56.968Z]] <https://web.archive.org/web/20070912163349/http://lunarclock.org/lunar-standard-time-formats.php>
- [14] [CITE[Lunar Standard Time (LST) - What time is it on the Moon?]], [TIME[2023-07-07T12:06:26.000Z]], [TIME[2007-09-10T01:48:59.151Z]] <https://web.archive.org/web/20070910014858/http://lunarclock.org/faq.php>

[18] 第1年の前が第-1年なのは残念なところかな。[[紀元前]]表記でなく負数にするなら
[[0年]]にすればよかったのに。[[負符号]]を使うだけで実質[[紀元前方式]]。

[15] 
実装:

- [16] [CITE[Lunar Standard Time (LST) - What time is it on the Moon?]], [TIME[2023-07-07T12:07:07.000Z]], [TIME[2007-09-10T01:50:52.826Z]] <https://web.archive.org/web/20070910015021/http://lunarclock.org/download/index.php>
- [17] [CITE[Lunar Standard Time (LST) - What time is it on the Moon?]], [TIME[2023-07-07T12:07:22.000Z]], [TIME[2007-09-10T01:50:36.286Z]] <https://web.archive.org/web/20070910015016/http://lunarclock.org/convert-to-lunar-standard-time.php>



*

[3] [CITE@en[What time is it on the Moon?]], [TIME[2023-02-08T06:17:02.000Z]] <https://www.nature.com/articles/d41586-023-00185-z>

[4] [CITE@ja[月は今何時?月の標準時を定める必要性 : カラパイア]], [TIME[2023-02-08T06:18:49.000Z]] <https://karapaia.com/archives/52319840.html>

[5] [CITE@ja[地球とは時間の流れが違う「月の時刻」はどうやって決められるのか? - GIGAZINE]], [TIME[2023-02-24T08:09:46.000Z]], [TIME[2023-02-24T08:38:32.798Z]] <https://gigazine.net/news/20230223-time-moon/>

[6] [CITE@en[Standard Lunar Reference Clock Needed for Future Communications]], [TIME[2023-03-06T08:37:09.000Z]] <https://gizmodo.com/standard-lunar-clock-needed-future-communications-1850163382>

[7] [CITE@ja[欧州宇宙機関、月の標準時を作りたい | ギズモード・ジャパン]], [[mediagene Inc.]], [TIME[2023-03-06T08:37:36.000Z]] <https://www.gizmodo.jp/2023/03/standard-lunar-clock-needed-future-communications.html>

[19] 
[CITE@ja[【警戒せよ!生死を分ける地震の基礎知識】月の「標準時」とは? 地球より早く進む難題も 各国の宇宙機関、30年にも月の「全球測位衛星システム」構築を計画(2/2ページ) - zakzak:夕刊フジ公式サイト]], [[SANKEI DIGITAL INC.]], [TIME[2024-02-09T06:51:10.000Z]], [TIME[2024-02-09T07:04:34.717Z]] <https://www.zakzak.co.jp/article/20240209-AJ3HY64L2BKXBAJIPTY3WPHGJE/2/>

* LTC

[27] 
[CITE@en-US[White House Office of Science and Technology Policy Releases Celestial Time Standardization Policy | OSTP | The White House]], [TIME[2024-04-07T06:28:10.000Z]] <https://www.whitehouse.gov/ostp/news-updates/2024/04/02/white-house-office-of-science-and-technology-policy-releases-celestial-time-standardization-policy/>


[28] 
[CITE@en[Moon Standard Time? Nasa to create lunar-centric time reference system | Nasa | The Guardian]], [TIME[2024-04-07T06:28:25.000Z]] <https://www.theguardian.com/science/2024/apr/02/moon-nasa-coordinated-lunar-time>


[20] 
[CITE@ja[「月の標準時」策定を指示 米ホワイトハウスがNASAに―報道:時事ドットコム]], [TIME[2024-04-03T06:41:30.000Z]] <https://www.jiji.com/jc/article?k=2024040300401&g=int>

[21] 
[CITE@ja[米国政府、「月の標準時」策定をNASAに指示 - ITmedia NEWS]], [TIME[2024-04-05T06:26:58.000Z]] <https://www.itmedia.co.jp/news/articles/2404/04/news108.html>


[22] 
[CITE@ja[月の標準時「LTC」を米国が策定へ - Impress Watch]], [[株式会社インプレス]], [TIME[2024-04-05T06:35:42.000Z]] <https://www.watch.impress.co.jp/docs/news/1581780.html>

[23] 
[CITE@ja[米国が「月世界標準時」確立へ 探査活発化にらみ方針 日本などにも働きかけ - 産経ニュース]], [[SANKEI DIGITAL INC.]], [TIME[2024-04-05T06:33:24.000Z]], [TIME[2024-04-05T06:36:05.897Z]] <https://www.sankei.com/article/20240403-3AGAQZREMBJN3OULNADNVDEDSQ/>

[24] 
[CITE@ja[NASA、「月の標準時」設定の準備はじめました | ギズモード・ジャパン]], [[mediagene Inc.]], [TIME[2024-04-07T06:24:34.000Z]] <https://www.gizmodo.jp/2024/04/standard-lunar-clock-nasa.html>

[25] 
[CITE@ja[地球時間と別に「月の標準時」を作る計画! - ナゾロジー]], [TIME[2024-04-07T06:25:32.000Z]] <https://nazology.net/archives/148180>

[26] 
[CITE@en-US[NASA Is Creating a 'Moon Standard Time' : ScienceAlert]], [[AFP]], [TIME[2024-04-04T01:06:29.000Z]], [TIME[2024-04-07T06:27:43.059Z]] <https://www.sciencealert.com/nasa-is-creating-a-moon-standard-time>

-[30] 
[CITE@ja[放っておいたら維持できない? 「究極の共通言語」計量単位維持・設定の最前線について、臼田孝氏に聞いた|ニューズウィーク日本版 オフィシャルサイト]], [TIME[2025-06-03T06:51:52.000Z]] <https://www.newsweekjapan.jp/akane_t/2025/06/post-1_4.php>
--[31] 
[CITE@ja[放っておいたら維持できない? 「究極の共通言語」計量単位維持・設定の最前線について、臼田孝氏に聞いた|ニューズウィーク日本版 オフィシャルサイト]], [TIME[2025-06-03T06:53:11.000Z]] <https://www.newsweekjapan.jp/akane_t/2025/06/post-1_5.php>



* 架空の月時間


[2] [[RFC 1607]]


* メモ


[1] [CITE@en[Lunar day - Wikipedia]]
([TIME[2017-05-03 21:28:50 +09:00]])
<https://en.wikipedia.org/wiki/Lunar_day>