"New Style" (abbr. N.S.) is a calendrical term meaning that the dates are expressed according to the Gregorian reform, which took effect in England in 1752; the opposite is Old Style (abbr. O.S.). Dates in the 17c-19c are rather often given in both (e.g., "Oct. 25/12 ") to make them completely unambiguous. In pre-1847 the reform must still have been close enough that the position of the equinoxes, solstices, the tracing of those lemniscates you real diallists like so much, etc., would have to be specified for one calendar or the other. It also affects the date of the apogee, of course.
-- Bill Thayer 41N53 87W38 col cuore a 42N59.5 12E42.4 alt.313m http://www.ukans.edu/history/index/europe/ancient_rome -
