Yes, the timing of ovulation changes with age. During reproductive life, women usually have regular menstrual cycles and ovulate each month. These eggs mature during the menstrual cycle until ovulation occurs. This process, although very simple to explain, is quite complex because many substances are involved that will favor recruitment and dominance selection, causing the ovarian reserve to decrease throughout the reproductive life.
We know that the ovarian reserve begins to decrease from the age of 35 years. From 38-39 years of age, in addition to the decrease in ovarian reserve, the quality of the eggs also decreases. Therefore, the chances of pregnancy are compromised.
Because of this, the time of ovulation will change with age according to the ovarian reserve, in some cases becoming anovulatory cycles and finally disappearing menstruation and entering the menopausal/climacteric period.