Salem

How about ingame holidays (which correspond to the real life calender )?.

Some basic ideas:
On Halloween, ghosts and some "demons" or so are going around - or the Darkness expends significantly for that day- or you can craft Jack-O-laterns out of a pumpkin and a torch, or Boston is decorated with Jack-O-Laterns

Thanksgiving/ Harvest festival: Bringing food to the church - and purity of the food increases in the church

Walpurgis Night (30th of April towards 1st May): Witches get some bonus/access to a certain spell/skill improvement when they meet up around a fire in a minimum number- Darkness also Expends

Eve of St. George: small blue flames can be seen in Marshes, Grasland and when you dig there you can find some coins or so

would be cool to see some holiday stuff around boston at least.

I love the idea, on thanksgiving we should have a hunt to see who can catch the most turkeys or something fun like that with a prize pool.

Would be fun. Maybe we can have a contest to see who can hunt the most Moose (In Canada, Reindeer are called 'Moose', ) at Christmas.