code: def get_clean_monday(self, year):
          "Return the clean monday date"
          sunday = self.get_easter_sunday(year)
          return sunday - timedelta(days=48f get_clean_monday(self, year):
          "Return the clean monday date"
          sunday = self.get_easter_sunday(year)
          return sunday - timedelta(days=48)
docs: Return the clean monday date