Section 2586. Anniversary day as a holiday for pupils in the public schools of the borough of Brooklyn and in the borough of Queens, city of New York

The  first Thursday in June in each year, except in those years  when the first Thursday in June occurs in the same  week  with  Memorial
  day, and in such years the second Thursday in June, known as anniversary
  day,  and  celebrated  in  commemoration  of  the organization of Sunday
  schools, is hereby made and declared to be a holiday for pupils  in  all
  the  public  schools  in  the  borough of Brooklyn and in the borough of
  Queens, city of New York, and pupils shall not be required to attend the
  public schools in such boroughs on such day.