For Spring admissions, deadlines typically will be from August to October. You might also check to see if they will allow you to start in Spring. Many programs do not.
Occassionally, some deadlines are much earlier.
It's probably a really good first step to identify those deadlines so you can plan backwards when to take your GRE and when to start prepping. In fact I suggest that you print this page out and circle this as Step 1 to do this week.
Click here for: