Boxing Day on 26 December is a nationwide German public holiday and extends the Christmas block. In practice, it is often a visit, family and return-travel day.
Many families use the day for further visits, calmer gatherings or the first stage of return travel.
Nationwide public holiday on 26 December. The legal baseline is clear; the practical answer still depends on weekday, neighbouring workdays, school dates and local opening hours.
Read 26 December with Christmas Day, weekend position, school breaks and return travel. The effect comes from the whole block, not from the date alone. That check should happen before booking travel, moving meetings or assuming that school and work calendars line up.