Sometimes the theaters don't put new movie showtimes until late Wed or Thursday...I think because they may get their movies between Mon-Wed for that week. Leaving them only a day or so to schedule. A good day to start looking is Thursday's. I've never had a problem. But also this is usually only for new movies. Older movies usually stay up through the week until they change it to fit in the new movies.
Times should be up every Wednesday for following film week on AMC website (not google). If not, call.
Call them. They should have updated recording of movies and times.
Call to check
You would have to call and talk to them about it.
Thanks! Your answer is awaiting moderation.