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" The civil day begins at midnight and comprises 24 hours, the hours being counted from 0 to 12 in two scries, the first marked am running from midnight to noon and the second marked pm running from noon to midnight. The astronomical day begins at noon... "
The American Ephemeris and Nautical Almanac - Page 702
by United States Naval Observatory. Nautical Almanac Office - 1911
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Congressional Serial Set

1895 - 578 pages
...divided into two periods of 12 hours each, of which the first is marked AM, and the last is marked PM The Astronomical Day begins at noon on the civil day of the same date. It also comprises twenty-four hours, but they are reckoned from о to 24, and from the noon of one...
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Congressional Serial Set

1900 - 662 pages
...comprises twenty-four hours, which extend to the next following midnight. The hours are counted from о to 12 in two series; the first, marked AM, running...second, marked PM, running from noon to midnight. Astronomical Dav. — The astronomical day begins at noon on the civil day of the same date. It also...
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The American Nautical Almanac

1907 - 294 pages
...comprises twenty-four hours, which extend to the next following midnight. The hours are counted from о to 12 in two series; the first, marked AM, running...second, marked PM, running from noon to midnight. Astronomical Da\. — The astronomical day begins at noon on the civil day of the same date. It also...
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The American Ephemeris and Nautical Almanac

United States Naval Observatory. Nautical Almanac Office - 1915 - 798 pages
...time clock. The Civil Day begins at midnight and comprises 24 hours, the hours being counted from 0 to 12 in two series; the first, marked AM, running...of the same date, the 24 hours being counted from 0 to 24, running from noon of one day to noon of the next following day. Astronomical tune as well...
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Direction and Position Finding by Wireless

Ronald Keen - 1922 - 412 pages
...would be greater than 24 hours and Greenwich date would have been Feb. 15th instead of Feb. 14th, since the astronomical day begins at noon on the civil day of the same date, and this would affect the value of the equation of time as found in the tables. (4) Take from the Nautical...
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Chicago Daily News Almanac and Political Register

1924 - 1040 pages
...Ь-'мпг counted from 0 to 12 in two series, the first marked am running- from midnight to noon arid ,5ǚy q C ؟3V B tR besins at noon on the civil day of the same date, thn Ü4 hours being counted from 0 to 24, running...
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The American Nautical Almanac

1912 - 554 pages
...Ephemeris. Т1к Civil Day begins at midnight and comprises 24 hours, the hours being counted from о to 12 in two series; the first, marked AM, running...of the same date, the 24 hours being counted from о to 24, running from noon of one day to noon of the next following day. Astronomical time as well...
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Chicago Daily News Almanac and Political Register, Volume 44

George Edward Plumbe, James Langland, Claude Othello Pike - 1927 - 1040 pages
...ASTRONOMICAL DAY. The civil day begins at midnight and comprises 24 hours, the hours being counted from 0 to 12 in two series, the first marked am running from...of the same date, the 24 hours being counted from 0 to 24. rxmning from noon of one day to noon of the next following day. Astronomical time ая well...
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General Tide Tables for the Year ...

1915 - 604 pages
...actual position of the sun in the heavens. Time, Astronomical: Apparent or mean solar time in which the day begins at noon on the civil day of the same date. In this time Oh is noon, 12h is midnight, and 23h is 11 am of the next civil day. Time, Civil: Apparent...
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