I never thought of Halloween as any other time than October 31. The local towns here do set and publish certain dates, times and age limits for trick or treating. A lot of local organizations also have what is called "trunk or treat" where members of the organization park their cars in a parking lot with the trunk open and the children walk from car to car for candy. I don't think it would be as much fun for the kids but we have had a lot of incidents with razor blades in apples and this is a little safer.

Now as far as the religious aspect of Halloween, we celebrate it in my church. Halloween is the eve of All Saints Day and is when Martin Luther nailed his 95 Theses to the door of the church knowing people would be coming to church the next day and would read it. It is considered the beginning of the Reformation and we celebrate it with a church service. It is called Reformation Day.