How can I calculate the day of my ovulation period?

Taking your basal temperature and recording for 6 months, is the best way to determine when you're ovulating.

http://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CCoQFjAA&url=http%3A%2F%2Fwww.babycenter.com%2Fchart-basal-body-temperature-and-cervical-mucus&ei=QCV5U62sBonvoATIrIDgCA&usg=AFQjCNFE7blyxVU3sVzCIzF3knFp7hcIxA