Swan [electronic resource] : a new almanack for the year of our Lord God 1679 : being the third after bissextile, or leap-year, and from the creation of the world (at the spring) 5682 years compleat : calculated properly for the famous university and town of Cambridge, whose longitude is 24 degr. and 20 min., latit. 52 deg. and 17 min. : wherein is shewed the principal aspects of the planets, with the beginning and ending of the terms both at Cambridge, and London, with several other things of note sutable for a work of this kind.