Someone posted in a FB group earlier today that there appears to be a glitch with the system and their screenshots were for BWV.My best guess on that one is that it is likely a system problem, which, now and then (all too often actually), wipes out a future date past 11 months when days before and even after are still shown as open). The website seems to be showing something different than availability. It is not clear the 18th is open or closed -- it has a faded picture -- and the 19th is shown as white rather than the usual light blue for being closed out. Thus, you may want to contact MS about the issue.