Ovulation typically occurs about 2 weeks before the start of your menstrual cycle. Ovulation means that someone's ovary has released an egg into their fallopian tube (learn more about female anatomy here). So, for example, if the first day of their period is April 14th, then ovulation may have occurred 14 days before, around March 31st or April 1st.
The exact time of ovulation can be difficult to know, especially if someone has a menstrual cycle that is longer or shorter than 28 days. There are ovulation date calculators online and mobile apps such as Clue and Flo that can help you best predict when ovulation occurs.
Watch a video on ovulation and the menstrual cycle here: violetproject.org/menstrual-health
When someone with female anatomy is ovulating, they are most fertile, so be extra careful about using contraception at this time.