N.S.

Proper noun

 * 1)  (dates according to the Gregorian calendar)
 * 1)  (dates according to the Gregorian calendar)
 * 1)  (dates according to the Gregorian calendar)

Usage notes
This is the customary abbreviation of this term as used in case citations. See, e.g., The Bluebook: A Uniform System of Citation, Nineteenth Edition (2010), "Geographical Terms: Australian states and Canadian provinces and territories", Table T10.2, p. 438.