Chronology: or, the art of reckoning time. [electronic resource] : Describing the several divisions of time in common use; the nature and original of cycles and periods, and the most remarkable aera's; and the manner of Computing the Numbers of such Cycles, or the Common Notes, for any Year; the moveable Feasts; the Places of the Sun and Moon; and the Nature of the Calendar. Founded upon Astronomical Principles. To which is added, A Short Chronological Table.