Sofford 1631 [electronic resource] : a new almanacke and prognostication for the yeere of our Lord God 1631, being the third from the bissextile or leape yeere : calculated for the latitude and meridian of the most honourable city of London, where the pole Articke is eleuated aboue the horizon 51. degrees and 32. minutes, and may very well serue for the most parts of Great Britaine / by Arthure Sofford