What are your trolls that don't celebrate 12th doing during this season?
Azrera's probably just doing the same thing they always do. It's just another day to them.
Zekiah has his own god of faith and flesh to see to, who favors this time of year, so outside of church get-togethers he's likely tending to the church's shrine.
Aingel doesn't know about 12th Perigee holiday(s).
M4NGL3 is grumbling about loud music and drunk people. Will likely try to find a mission to occupy itself with.
Matild is staying at her castle, looking over the gylphs and magic that protect the hidden crypt hiding all the graves of those who died in the Mage War, and will be tending to them and renewing the magic around them.