While there are many details that author/creators must remember and control, there are some realistic strategies that you can use to limit the effect of slips.
At best, fiction is an attempt to create understanding about [pseudo-]events that happened in a particular way at a particular time. In order to create fiction, even "creative nonfiction" about real events, we have to delete massive amounts of information. We are collapsing a general superimposed wave form into a single line and then abstracting that line to an aesthetically pleasing abstract presentation in the form of language.
Get it right if you can, but you can also get it artfully wrong, and please just as many readers.