Dag Sinterklaasje is a traditional Dutch children's song sung when Sinterklaas departs after his annual visit around early December, a moment long marked in schools and homes in the Netherlands and Belgium. The simple farewell lyrics and easy melody have made it a staple of Saint Nicholas celebrations, passed down through generations of children rather than tied to a single recording or performer. Online, the short snippet is reused as a seasonal sign-off, instantly signalling the end of the festivities and the bittersweet goodbye to the beloved gift-bringer.