Boxing Day is traditionally a day following Christmas when wealthy people in the United Kingdom would give a box containing a gift to their servants.^[1] 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 the United Kingdom, 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 recognized as St. Stephen's Day (Irish: Lá Fhéile Stiofáin) or the Day of the Wren (Irish: Lá an Dreoilín). In the Netherlands, Latvia, Lithuania, Austria, Germany, Scandinavia and Poland, December 26 is celebrated as the Second Christmas Day.^[2]

St. Stephen's Day, or the Feast of St. Stephen, is a Christian saint's day celebrated on 26 December in the Western Church and 27 December in the Eastern Church. Many Eastern Orthodox churches adhere to the Julian calendar and mark St. Stephen's Day on 27 December according to that calendar, which places it on 9 January of the Gregorian calendar used in secular contexts. It commemorates St. Stephen, the first Christian martyr or protomartyr. It is an official public holiday in Austria, Balearic Islands, Catalonia, Croatia, Czech Republic, Germany, Ireland, Italy, Luxembourg, Macedonia, Montenegro, Norway, Denmark, Estonia, Sweden, Finland, Romania, Serbia, Slovakia and Poland. The date is also a Public Holiday in those countries that celebrate Boxing Day on the day instead/as well.

In Ireland, the day is one of nine official public holidays.^[1]