The departure of the thirteen Icelandic Yule Lads, known as “Jólasveinarnir“, from Icelandic houses and communities occurs gradually between 25 December and 6 January. This period marks the end of their annual visitation. Here’s an overview of how their departure unfolds:

• Christmas Day (25 December): The departure of the Yule Lads begins on Christmas Day, which is a significant holiday in Iceland. Traditionally, it’s believed that the Yule Lads leave the homes and communities where they’ve been causing mischief and return to their mountain abode, known as “Dimmuborgir,” which translates to “Dark Castles.” Families may leave out special treats for the Yule Lads as a gesture of farewell and gratitude.
  
• 26- 31 December: Over the next several days following Christmas, the Yule Lads gradually make their way back to their mountain hideaways. Each night, one of the Yule Lads departs. The order of departure is generally the reverse of their arrival, with the last to arrive being the first to leave.
  
• New Year’s Eve (31 December): On New Year’s Eve, it’s customary to celebrate with fireworks, as Icelanders believe that lighting fireworks helps to drive away the last remnants of the Yule Lads and other supernatural beings who may still be lingering.
  
• 6 January (Þrettándinn – Epiphany): On Þrettándinn, Icelanders bid farewell to the holiday season. This day is marked by various customs and festivities, including bonfires and parades. It is believed that on this day, the Yule Lads return to their remote mountain homes, and the holiday season is officially over.

As the Yule Lads gradually retreat to their mountain home, and the atmosphere in Icelandic communities shifts from the playful mischief of the Yule Lads to the more solemn and reflective celebration of the New Year and Epiphany. The departure of the Yule Lads marks the transition from the festive holiday season to the beginning of the new year in Iceland, with each Yule Lad bidding farewell until their return the following December.