Mercurius coelicus, sive, Almanack et prognosticon, vel Speculum anni à nativitate. J.C, 1645. : Et ab astrorum creatione Keplerianâ 5638. Being the first after beissxtile [sic] or leap year. Wherein is contained a triple kalender, viz. the Julian or English, the Gregorian or forraigne, and true accompt, with all the lunations, planetary configurations, eclipses, with astrologicall observations, and predictions therein. Calculated exactly, and composed by John Booker, for the meridian of the famous City of London