The United States Almanack, For the Year of our Lord 1851; being the third after bissextile, or leap year; containing 365 days: and after the 4th of July, the 75th of American independence. Arranged after the system of the German calendars. Containing the rising, setting, and eclipses of the sun and moon; the phases, signs, and southings of the moon; the aspects of the planets, with the rising, setting, and southing of the most conspicuous planets and fixed stars; the times of high water at Philadelphia; the equation of time, and other miscellanies, &c.,
Philadelphia: William G. Mentz, 1850. Softcover. Black and white illustrated wraps, 34 pp, bw illustrations. "All the calculations of this almanack are made to solar or apparent time; to which add the equation in the hour-table when the sun is slow, and subtract when fast, for mean or clock time."-..... More