What is ovulation? Ovulation is the most important time period in the female reproductive cycle. It refers to the process by which eggs are released from the ovaries into the fallopian tubes. Normally, a woman\’s cycle is 28 days, and the ovulation period is around the 14th day of menstruation. However, each woman\’s cycle is different, and the ovulation period will also be different, so it is necessary to calculate it accurately.