December 26th, day after Christmas Day! And according to Wikipedia...
Boxing Day got its name when Queen Victoria was on the throne in the 1800s and has nothing to do with the sport of boxing.
The name comes from a time when the rich used to box up gifts to give to the poor.
Boxing Day was traditionally a day off for servants, and the day when they received a special Christmas box from their masters.
The servants would also go home on Boxing Day to give Christmas boxes to their families.