ยง  6.  Persons observing another day as a Sabbath.  It is a sufficient
  defense to a prosecution for work or labor on the first day of the  week
  that the defendant uniformly keeps another day of the week as holy time,
  and  does  not  labor  on that day, and that the labor complained of was
  done in such manner  as  not  to  interrupt  or  disturb  other  persons
  observing the first day of the week as holy time.
Structure New York Laws
4 - Punishment for Sabbath Breaking.
5 - Labor Prohibited on Sunday.
6 - Persons Observing Another Day as a Sabbath.
7 - Public Sports and Exercises on Sunday.
8 - Trades, Manufactures, and Mechanical Employments Prohibited on Sunday.
10 - Prosecutions for Conducting Business on Sunday by Certain Persons.
11 - Serving Civil Process on Sunday.
12 - Forfeiture of Commodities Exposed for Sale on Sunday.
13 - Maliciously Serving Process on Saturday on Person Who Keeps Saturday as Holy Time.