Of course, one can always celebrate the week before the Solstice and the week after the Solstice as "Halcyon Days." To mariners of old, these were the days of days of happiness and tranquility. After the Summer storms (which we had) and before the Winter storms, which we hope to not have.
Your choice. Doubting Doling Thomas Day, or Halcyon Days.
Of course, you can always just celebrate the Yule by drinking around the village wassailing, eating apples & oranges, burning the Ash and cheering the return of the Oak King.
Celebrate yours responsibly.