The best time to have intercourse during ovulation is 17:00-19:00 on the day of ovulation. Women with normal menstrual cycles can calculate their ovulation period and ovulation day, 14 days before the next menstrual period, five days before and four days after the day of ovulation plus the day of ovulation, which is the ovulation period. It is best to have intercourse on the day of ovulation, preferably between 17:00 and 19:00, as this is the time when sperm are most active. After intercourse, women should not rush to get up and lie on their backs with a pillow under their buttocks to increase their chances of pregnancy.