LNM are good for the upcoming week, but they're time late when there are changes. I've found keeping track of the NGA NAVAREA IV navigation
warnings is the best way to know when the restricted/safety areas are up. You can either click on the daily memorandum section of their site, or (if you're a Space Coast local like me) just subscribe to the navigational warnings. Yes, NAVAREA IV is large, and you'll get stuff you don't need, but it's easy to delete an email
(typically three or four a day). As mentioned above, CH 16 always.