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* ダリアン暦

[13] [[ダリアン暦]]

* 紀年法

[25] 
[CITE@ja[「火星の新しい1年」: suchowan's blog]], [TIME[2025-05-29T13:21:26.000Z]] <https://suchowan.seesaa.net/article/202411article_20.html>

* 架空の日時

[SEE[ [[架空の日時]] ]]

-*-*-

- [17] 
[CITE[帝國火星曆 - 兩河世界]], [TIME[2024-12-10T09:58:14.000Z]] <https://scrapbox.io/yuraru/%E5%B8%9D%E5%9C%8B%E7%81%AB%E6%98%9F%E6%9B%86>
- [18] 
[CITE[帝國火星曆に就て - 兩河世界]], [TIME[2024-12-10T09:58:30.000Z]] <https://scrapbox.io/yuraru/%E5%B8%9D%E5%9C%8B%E7%81%AB%E6%98%9F%E6%9B%86%E3%81%AB%E5%B0%B1%E3%81%A6>
- [16] 
[CITE@en[arubadaigaku-asadabunkau-kieu/或羽大學麻田分校紀要1425年冬/帝國火星曆に就て.md at master · c4se-jp/arubadaigaku-asadabunkau-kieu · GitHub]], [TIME[2024-12-10T09:58:02.000Z]] <https://github.com/c4se-jp/arubadaigaku-asadabunkau-kieu/blob/master/%E6%88%96%E7%BE%BD%E5%A4%A7%E5%AD%B8%E9%BA%BB%E7%94%B0%E5%88%86%E6%A0%A1%E7%B4%80%E8%A6%811425%E5%B9%B4%E5%86%AC/%E5%B8%9D%E5%9C%8B%E7%81%AB%E6%98%9F%E6%9B%86%E3%81%AB%E5%B0%B1%E3%81%A6.md>
- [15] 
[CITE@ja[「或羽大學麻田分校紀要 1425 年冬」を公開した - c4se記:さっちゃんですよ☆]], [TIME[2024-12-10T09:57:46.000Z]] <https://c4se.hatenablog.com/entry/2020/06/14/233311>
- [19] [CITE@en[GitHub - c4se-jp/martian_imperial_year_table: 帝國火星曆]], [TIME[2024-12-10T09:58:41.000Z]] <https://github.com/c4se-jp/martian_imperial_year_table>
- [22] 
[CITE@en[GitHub - ne-sachirou/martian_imperial_year_table: 帝國火星曆]], [TIME[2024-12-10T09:59:13.000Z]] <https://github.com/ne-sachirou/martian_imperial_year_table>
- [21] 
[CITE[帝國火星曆七曜󠄁表 1425 年冬 - 兩河世界]], [TIME[2024-12-10T09:59:02.000Z]] <https://scrapbox.io/yuraru/%E5%B8%9D%E5%9C%8B%E7%81%AB%E6%98%9F%E6%9B%86%E4%B8%83%E6%9B%9C%F3%A0%84%81%E8%A1%A8_1425_%E5%B9%B4%E5%86%AC>
- [20] 
[CITE[帝國火星曆七曜表 1426 年春、夏 - 兩河世界]], [TIME[2024-12-10T09:58:52.000Z]] <https://scrapbox.io/yuraru/%E5%B8%9D%E5%9C%8B%E7%81%AB%E6%98%9F%E6%9B%86%E4%B8%83%E6%9B%9C%E8%A1%A8_1426_%E5%B9%B4%E6%98%A5%E3%80%81%E5%A4%8F>

[23] 
[[架空世界]]の世界設定としての[[暦]]とはいえ、[[現実世界]]の[[火星]]の天文学的性質に基づく本格的なタイプ。
世界設定に基づき、[[現実世界]]の[[大日本帝國]]の[[祝祭日]]から発展した[[祝日]]や、
[[六曜]]に着想を得た独自の[[七曜]]などもある。

* 関連

[4] [[宇宙の日時]]、[[火星座標系]]も参照。

* メモ

[8] [CSECTION@en[Time and time zones on Mars]] ([TIME[2015-08-11 11:02:03 +09:00]] 版)
<https://www.ietf.org/timezones/data/Theory>

[1] [CITE@en[Timekeeping on Mars - Wikipedia]]
([TIME[2017-05-12 18:41:41 +09:00]])
<https://en.wikipedia.org/wiki/Timekeeping_on_Mars>

[2] [CITE@en[Mention time on Mercury, Venus, etc.]]
([[eggert]]著, [TIME[2017-10-02 03:58:19 +09:00]])
<https://github.com/eggert/tz/commit/2bce136e4739128f44cc3d78e47974db8956e16a>

[FIG(quote)[
[FIGCAPTION[
[3] [CITE@en[Solar-Powered Rover Approaching 5,000th Martian Dawn | NASA]]
([TIME[2018-02-17 03:07:47 +09:00]])
<https://www.nasa.gov/feature/jpl/5000-days-on-mars-solar-powered-rover-approaching-5000th-martian-dawn>
]FIGCAPTION]

> A Martian "sol" lasts about 40 minutes longer than an Earth day, and a Martian year lasts nearly two Earth years. Opportunity's Sol 1 was landing day, Jan. 25, 2004 (that's in Universal Time; it was Jan. 24 in California). The prime mission was planned to last 90 sols. NASA did not expect the rover to survive through a Martian winter. Sol 5,000 will begin early Friday, Universal Time, with the 4,999th dawn a few hours later. Opportunity has worked actively right through the lowest-energy months of its eighth Martian winter.

]FIG]

[5] [CITE@en[Mention Zone names with two slashes]]
([[eggert]]著, [TIME[2018-04-06 09:42:08 +09:00]])
<https://github.com/eggert/tz/commit/3a02ddfa46caa9524ee6c81e29f735c8c6b116b0>

[6] [CITE[Kyoto University Research Information Repository: 火星世界の時制 (時と曆の特輯)]]
([TIME[2018-03-23 14:45:26 +09:00]])
<https://repository.kulib.kyoto-u.ac.jp/dspace/handle/2433/168203>

[7] [CITE@ja[さっき妻が電話で「夫が火星時間勤務になっちゃって…毎日40分ずつずれるそうで…前代未聞の時差ボケですよ…」と話していて相手が困惑していた - Togetter]], [TIME[2021-02-18T12:20:41.000Z]] <https://togetter.com/li/1669664>

[FIG(quote)[
[FIGCAPTION[
[9] [CITE@en[We're Getting Ready for Ingenuity’s Second Flight - NASA Mars]]
([[mars.nasa.gov]], [TIME[2021-04-26T06:12:22.000Z]])
<https://mars.nasa.gov/technology/helicopter/status/294/were-getting-ready-for-ingenuitys-second-flight/>
]FIGCAPTION]

> With the first flight of Ingenuity a success, we’re looking toward our second taking place on April 22, which is the 18[SUP[th]] of the 30 sols (Martian days) of our flight test window.
> For this second flight test at “Wright Brothers Field,” we are targeting a takeoff time for 5:30 a.m. EDT (2:30 a.m. PDT), or 12:30 p.m. Local Mean Solar Time.

]FIG]

[10] [CITE[- 9Page41.pdf]], [TIME[2021-04-21T19:29:09.000Z]], [TIME[2021-04-26T06:14:16.972Z]] <https://spacemath.gsfc.nasa.gov/weekly/9Page41.pdf>

[FIG(quote)[
[FIGCAPTION[
[11] [CITE@en[NASA's Ingenuity Mars Helicopter Flies Faster, Farther on Third Flight – NASA’s Mars Exploration Program]]
([[mars.nasa.gov]], [TIME[2021-04-26T06:15:35.000Z]])
<https://mars.nasa.gov/news/8930/nasas-ingenuity-mars-helicopter-flies-faster-farther-on-third-flight/>
]FIGCAPTION]

> NASA’s Ingenuity Mars Helicopter continues to set records, flying faster and farther on Sunday, April 25, 2021 than in any tests it went through on Earth. The helicopter took off at 4:31 a.m. EDT (1:31 a.m. PDT), or 12:33 p.m. local Mars time, rising 16 feet (5 meters) – the same altitude as its second flight.

]FIG]

[12] [CITE@ja[べつの火星の暦: suchowan's blog]], [TIME[2022-04-04T03:26:29.000Z]] <https://suchowan.at.webry.info/201206/article_3.html>

[14] [CITE[Martian Time -- Welcome!]], [TIME[2021-10-25T17:13:31.000Z]], [TIME[2023-05-28T12:19:50.656Z]] <http://ops-alaska.com/time/>

[24] [CITE@ja[あけおめ!? 2024年11月12日から火星の新しい1年が始まる]], [TIME[2025-05-29T13:20:47.000Z]] <https://sorae.info/astronomy/20241112-new-martian-year-38.html>

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