code: def tai(self, year=None, month=1, day=1, hour=0, minute=0, second=0.0,
              jd=None):
          
          if jd is not None:
              tai = jd
          else:
              tai = julian_date(
                  _to_array(year), _to_array(month), _to_array(day),
                  _to_array(hour), _to_array(minute), _to_array(second),
              )
          return self.tai_jd(tai)
docs: Build a `Time` from a TAI calendar date.
  
          Supply the International Atomic Time (TAI) as a proleptic
          Gregorian calendar date:
  
          >>> t = ts.tai(2014, 1, 18, 1, 35, 37.5)
          >>> t.tai
          2456675.56640625
          >>> t.tai_calendar()
          (2014, 1, 18, 1, 35, 37.5)