If I have gotten this question once lately, I have gotten it dozens of times!
"How many days should I have in AIMS?"
My honest answer is... "How should I know!!!" But for your convenience, it typically averages out to...
226 days, give or take :)
There are 248 business days in the year, so by the time you account for your sick/annual leave and the nights/weekends you work, you should have a pretty good idea of your effort for the year.