Method rollforward

xarray/coding/cftime_offsets.py:572–577

Roll date forward to nearest start of year

(self, date)

        return date.day == 1 and date.month == self.month

    def rollforward(self, date):
        """Roll date forward to nearest start of year"""
        if self.onOffset(date):
            return date
        else:
            return date + YearBegin(month=self.month)

    def rollback(self, date):
        """Roll date backward to nearest start of year"""