The Second Christmas Day, also known as Boxing Day, is a national holiday in Denmark that falls on the 26th of December each year, the day after Christmas Day. This holiday is shared with a number of other countries, primarily ones previously part of the British Empire, and it traditionally considered as a time to give gifts to the less fortunate. In Denmark, the Second Christmas Day is seen as an extended part of the Christmas celebrations.

In Denmark, the Christmas season officially starts from the beginning of Advent and runs all the way through to the Second Christmas Day. On this day, people usually spend their time visiting family and friends who they were unable to see on Christmas Day. Others may also go for walks in the park or indulge in post-Christmas sales in-stores and online. Many public places are mostly closed, and the atmosphere in cities and towns is generally quiet and relaxed.

Besides the gatherings and casual activities, the Second Christmas Day marks an important day for Danish football. Traditionally, several stadiums throughout Denmark host 'Christmas matches'. This holiday fixture is a deep-rooted tradition in Danish football, setting aside the competitive spirit of the sport, in favor of spreading holiday cheer among fans and participants. In summary, the Second Christmas Day in Denmark is a calm, enjoyable day spent with loved ones, stretched out from the Christmas holiday proper.