if there are actually 13 months,
what is the extra month called?

It's SOL aka Jun 18* - Jul 15*

I hadn't heard a thing about Sol until this post but assuming that this is true, coupled with so many other crazy current events, it might be worth mentioning that I had a crazy couple of days last week where i could not get words and phrases out correctly....such as "fords and dases" and "week last days". I'm usually pretty articulate so this was unusual. Could this have been something or just a tired brain?

So many people were talking of headaches, dizziness, exhaustion, and other maladies. I thought it was the barometric pressure being so low...did you have any of these symptoms with your garbled words? I just haven't felt like talking much, and have been quiet with friends and family. Hope your feeling better!