Nearest equivalent to Christmas/Yule is Midwinter — Deadwinter Day, the world’s death before being born.
Does Christmas exist in D&D?
Regarding whether a Christmas-like holiday exists in the Realms, the answer is no, as you can read at the discussions on Candlekeep forums.
What can I do instead of celebrating Christmas?
What to do on Christmas Day when you don’t even celebrate…
