def shift_christmas_boxing_days(self, year):
christmas = date(year, <NUM_LIT:12>, <NUM_LIT>)<EOL>boxing_day = date(year, <NUM_LIT:12>, <NUM_LIT>)<EOL>boxing_day_label = "<STR_LIT>".format(self.boxing_day_label)<EOL>results = []<EOL>if christmas.weekday() in self.get_weekend_days():<EOL><INDENT>shift = self.find_following_working_day(christmas)<EOL>results.append((shift, "<STR_LIT>"))<EOL>results.append((shift + timedelta(days=<NUM_LIT:1>), boxing_day_label))<EOL><DEDENT>elif boxing_day.weekday() in self.get_weekend_days():<EOL><INDENT>shift = self.find_following_working_day(boxing_day)<EOL>results.append((shift, boxing_day_label))<EOL><DEDENT>return results<EOL>
When Christmas and/or Boxing Day falls on a weekend, it is rolled
            forward to the next weekday.