Which traditional New Year's Eve practice in Denmark involves jumping from a chair at midnight?

The Danish New Year's Eve practice of jumping from a chair at midnight is commonly called jumping into the New Year.

At midnight, some people in Denmark stand on chairs, sofas, or other raised places and leap down as the clock strikes twelve. The action is understood as a symbolic jump into the coming year and is often performed alongside champagne toasts, fireworks, and the singing of “Vær velkommen, Herrens år.”

The custom is a folk practice rather than a formal national ceremony, so it is not observed by every Danish household. It can also be described in English with several informal phrasings, but “jumping into the New Year” is the standard explanatory name. It should not be confused with New Year's resolutions, which are promises or goals rather than a physical ritual.