Section 58. Year in statute, contract and public or private instrument

The
  term  year  in a statute, contract, or any public or private instrument,
  means three hundred and sixty-five days, but the added  day  of  a  leap
  year  and  the  day  immediately preceding shall for the purpose of such
  computation be counted as one day. In a statute, contract or  public  or
  private  instrument,  the  term  year means twelve months, the term half
  year, six months, and the term a quarter of a year, three months.