Swan [electronic resource] : a new almanack for the year of our Lord God 1677, being the first after bissextile or leap-year and from the creation of the world, at the spring, 5680 years compleat : 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 suitable for a work of this kind : calculated properly for the famous University and town of Cambridge, whose longitude is 24 degr. and 20 min. latit. 52 deg. and 17 min.