Boxing Day is a holiday celebrated in the UK on December 26th, the day after Christmas Day. It is also a public bank holiday in the UK, and when December 26th falls on a Saturday, the following Monday is designated as the official public holiday. The origins of Boxing Day are not entirely clear, but there are several theories. One theory is that it originated from the opening of alms boxes that had been placed in churches for the collection of donations to aid the poor. Another theory is that it came from the boxes of gifts given to employees on the day after Christmas. However, the most widely accepted theory is that Boxing Day got its name when Queen Victoria was on the throne in the 1800s, and the wealthy would box up items they no longer needed to give to the poor. It was also a day when servants would be given time off and thanked for their hard work with a special box of treats. The servants would then head home and use the 26th to spend with their own families and share the presents they had just received.

Boxing Day is traditionally a day off for servants, and a day when they received a special Christmas box from their masters. The day also has religious connections and is celebrated as Saint Stephens Day in Ireland and the Catalonia region of Spain. In some European countries, such as Hungary, Germany, Poland, and the Netherlands, Boxing Day is celebrated as a second Christmas Day.

Today, Boxing Day is associated with shopping and sporting events, including horse races, foxhunting, and rugby. It is also a day when families get together, watch sports, and play board games. In the UK, Boxing Day sales are popular, and many people prepare leftover food from Christmas Day.

In summary, Boxing Day is a holiday celebrated in the UK on December 26th, the day after Christmas Day. It has religious connections and is associated with shopping and sporting events. The origins of the name are not entirely clear, but it is widely believed to have originated from the practice of giving gifts to the poor.