At home all day and night.
Boxing Day’s origin is more obscure, though it seems to date from the tradition of opening the collection boxes to give to the poor. It was also traditionally a time when the servants and those who ran households had the day off, having worked on Christmas Day, and they might be given a box as a gift, containing food or maybe a gift of money as well – a Christmas bonus.
It is also associated with a fox hunt.
26th December is the feast of St Stephen.