If a person's menstrual cycle is 28 days, then she has a regular menstrual cycle on the 18th of each month. If a person's menstrual cycle is not 28 days, her ovulation period will vary accordingly. So, if a person's menstrual cycle is 28 days, when is ovulation? Let’s do the math together.

So, if a person's menstrual cycle is 28 days, when is ovulation? Let’s do the math together.

Around the 14th of every month is the ovulation period for women, because a woman’s monthly menstrual cycle is 28 days, so around the 14th of every month is the ovulation period for women.

However, please note that everyone's cycle is different, so some people may ovulate before or after the 14th. Additionally, if a woman has certain medical conditions, such as endocrine disorders or ovarian disease, her cycle may be altered, which may also affect when she ovulates.