When do you take SAT of PSAT?

I took the PSAT during my sophmore year. I took the SAT both junior and senior year. You should take the SAT during your junior year so that if you wanted to take it again you at least have a chance to take it again another time in your senior year. The PSAT at my school before had a schedule of when you can take it and that was during somewhere beginning of my sophmore year.