Has Jim let us know if there any way to establish when an event in the novels happened in "Real World" time? Or is that deliberately vague to within a few years?
One of my players has a notion having to do with The Disney Corporation, so naturally we're talking about "Frozen" and the events of "Cold Days". The relative timing of those things is probably going to become important. We will fudge things to make our story work if necessary, but going through the process of "well, if things happened in this order, with this timing, they have done so because..." is more fun, and sometimes makes for a better story.