[Coffin, John Huntington Crane], 1815-1890. [from old catalog] · New York, D. Van Nostrand · leaf 109
105), SQ is taken out for the local day; in this, it istaken out for the Greenwich day, provided X +1, as used,expresses properly the Greenwich time. 107. S0 + .0027379 (t + X) is the sidereal time of theAlmanac interpolated for the Greenwich mean time. It ismore convenient to term it the right… … 102 NAVIGATION. P is the pole ;P M, the meridian ;f, the vernal equinox ;T M, the equator.°p M is also the right ascensionof the meridian, and measuresMPf, the hour-angle of T, or the sidereal time (Art. 65). If P S is the declination-circle passing through the mean sun,T S is the right ascension…
Navigation · Nautical astronomy
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