Add observances for Christmas Day and Boxing Day

Signed-off-by: Thomas Lauf <[email protected]>

src/holidata/holidays/AU/QLD.py

@@ -213,6 +213,16 @@ def __init__(self, country):
             .on(month=12, day=25) \
             .with_flags("RF")
 
+        """
+        27 December
+        A public holiday is to be observed on 27 December only if 25 December is a Saturday or Sunday.
+        """
+        self.define_holiday() \
+            .with_name("Christmas Day (observed)") \
+            .on(month=12, day=27) \
+            .with_flags("RF") \
+            .on_condition(self.date_is_on_weekend(month=12, day=25))
+
         """
         Boxing Day
         Public holiday on 26 December.
@@ -224,6 +234,16 @@ def __init__(self, country):
             .on(month=12, day=26) \
             .with_flags("RF")
 
+        """
+        28 December 
+        A public holiday is to be observed on 28 December only if 26 December is a Saturday or Sunday.
+        """
+        self.define_holiday() \
+            .with_name("Boxing Day (observed)") \
+            .on(month=12, day=28) \
+            .with_flags("RF") \
+            .on_condition(self.date_is_on_weekend(month=12, day=26))
+
     @staticmethod
     def date_is_on_weekend(month, day):
         def wrapper(year):