Hello afinterecomms,
I’m not entirely certain, but I believe the ajax is failing just because of the number of events you have in September! It definitely seems heavier than other months and the site seems generally slow.
If you open up the javascript console before clicking ‘September’, you’ll notice that the ajax request fails. If you had access to the server logs, it might be able to specifically tell you what is going wrong.
Does this make sense? Let me know if I can explain anything else!
Cheers!
– Casey Driscoll