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・ Januarisman
・ Januarius
・ Januarius (disambiguation)
・ Januarius and Pelagia
・ Januarius Kyunosuke Hayasaka
・ Januarius MacGahan
・ Januarius Maria Sarnelli
・ Januarius Zick
・ January
・ January (album)
・ January (disambiguation)
・ January (novel)
・ January (Pilot song)
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January 0
・ January 1
・ January 1 (1984 film)
・ January 1 (Eastern Orthodox liturgics)
・ January 10
・ January 10 (Eastern Orthodox liturgics)
・ January 11
・ January 11 (Eastern Orthodox liturgics)
・ January 12
・ January 12 (Eastern Orthodox liturgics)
・ January 13
・ January 13 (Eastern Orthodox liturgics)
・ January 14
・ January 14 (Eastern Orthodox liturgics)
・ January 15


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January 0 : ウィキペディア英語版
January 0
January 0 is an alternative name for December 31.
==In an ephemeris==
January 0 refers to the day before January 1 in an annual ephemeris. It keeps the date in the year for which the ephemeris was published, thus avoiding any reference to the previous year, even though it is the same day as December 31 of the previous year.
January 0 also occurs in the epoch for the ephemeris second, "1900 January 0 at 12 hours ephemeris time".〔(【引用サイトリンク】 publisher = Time Service Department, United States Naval Observatory )〕 1900 January 0 (at Greenwich Mean Noon) was also the epoch used by Newcomb's Tables of the Sun, which became the epoch for the Dublin Julian day.〔(ASTROCLK Astronomical Clock and Celestial Tracking Program ) (page 110)〕

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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