when does a woman ovulate

A woman typically ovulates about midway through her menstrual cycle, often around day 14 of a 28-day cycle. Ovulation occurs approximately 14 days before the start of the next period. The egg is released from the ovary and is available for fertilization for about 12 to 24 hours after release. The fertile window includes the five days leading up to ovulation and the day of ovulation itself, with the highest chance of pregnancy during the three days leading up to and including ovulation. Ovulation usually lasts between 16 to 32 hours. Since menstrual cycles can vary in length from 21 to 35 days, ovulation timing can vary accordingly but typically happens about 10 to 16 days before the next period.