As Ghost said, some AHJs around here use the 'temp' 90 day thing. Me? I don't have the time to get into this. Personally, I take mine down in mid or late January. If they are frozen in place, they can hang until the spring thaw, but they are not lit.
In some ethnic enclaves, there are many, many versions of 'holiday lights'. These are the ones that create complaint calls, until I explain the unofficial (official) reasoning for 'allowing' this. (Think lawsuits)
