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2013-1937 = 76 years old if birthday is on or before NOV 4
on Nov 11 2017 will be the 21st birthday before that date the age is 20
20135 days from Nov 16 2010 to Jan 1 2066.
2009-12 = 1997. Unless your birthday falls after today's date (4 Nov) in which case, you were born in 1996.
The abbreviation for November is "Nov."