parameters: (self, start_date, end_date)
return_statement: return dates
docstring: Get reference dates for the holiday.
  
          Return reference dates for the holiday also returning the year
          prior to the start_date and year following the end_date.  This ensures
          that any offsets to be applied will yield the holidays within
          the passed in dates.
docstring_summary: Get reference dates for the holiday.
docstring_tokens: Get reference dates for the holiday .
function: def _reference_dates(self, start_date, end_date):
          """
          Get reference dates for the holiday.
  
          Return reference dates for the holiday also returning the year
          prior to the start_date and year following the end_date.  This ensures
          that any offsets to be applied will yield the holidays within
          the passed in dates.
          """
          if self.start_date is not None:
              start_date = self.start_date.tz_localize(start_date.tz)
  
          if self.end_date is not None:
              end_date = self.end_date.tz_localize(start_date.tz)
  
          year_offset = DateOffset(years=1)
          reference_start_date = Timestamp(
              datetime(start_date.year - 1, self.month, self.day)
          )
  
          reference_end_date = Timestamp(
              datetime(end_date.year + 1, self.month, self.day)
          )
          # Don't process unnecessary holidays
          dates = date_range(
              start=reference_start_date,
              end=reference_end_date,
              freq=year_offset,
              tz=start_date.tz,
          )
  
          return dates
function_tokens: def _reference_dates ( self , start_date , end_date ) : if self . start_date is not None : start_date = self . start_date . tz_localize ( start_date . tz ) if self . end_date is not None : end_date = self . end_date . tz_localize ( start_date . tz ) year_offset = DateOffset ( years = 1 ) reference_start_date = Timestamp ( datetime ( start_date . year - 1 , self . month , self . day ) ) reference_end_date = Timestamp ( datetime ( end_date . year + 1 , self . month , self . day ) ) # Don't process unnecessary holidays dates = date_range ( start = reference_start_date , end = reference_end_date , freq = year_offset , tz = start_date . tz , ) return dates