The 12 days of Christmas are really just starting. But Boxing Day is actually something else, not related to that, I think ...
Boxing Day is the day after Christmas when wealthy people and homeowners in the United Kingdom would give a box containing a gift to their servants.
Today, Boxing Day is better known as a bank or public holiday that occurs on December 26, or the first or second weekday after Christmas Day, depending on national or regional laws. It is observed in Great Britain, Australia, Canada, New Zealand, and some other Commonwealth nations.
In South Africa, Boxing Day was renamed Day of Goodwill in 1994.
In Ireland it is St. Stephen's Day (Irish: Lá Fhéile Stiofáin) or the Day of the Wren (Irish: Lá an Dreoilín).
In the Netherlands, Lithuania, Austria, Germany, Scandinavia and Poland, December 26 is celebrated as the Second Christmas Day.
In Canada, Boxing Day is a federal statutory holiday where all full-time workers receive time off with pay.