When did i ovulate if my tests were positive on friday morning till saturday night...?

Probably Saturday, but it could have been Friday or Sunday. Ovulation tests only tell you when your hormones peaked, not precisely when the egg was released. Ovulation usually occurs within a day or so of the hormone peak. For the purpose of TTC, it doesn't matter which day it was. Sperm can live up to 5 days, so as long as you had sex sometime between Wednesday and Sunday you've got a chance of being pregnant. If you had sex on several days in that time, then your chances are better.