Speculum uranicum, or, An almanack and prognostication for the year of our Lord 1680 : being the bissextile or leap-year and from the creation of the world 5629 : wherein is contained the state of the year, the eclipses, lunations, conjunctions and asspects of the planets throughout the whole year, and rules to find the rising, southing and setting of some of the principal noted fixed stars, whereby might be known the true hour of the night at all times when the stars are to be seen : calculated and referred to the famous city of London, whose longitude is 24 degrees 20 minutes, latitude 51 degrees 32 minutes, and may serve without any sensible errour the whole kingdom of England /