Chinese calendar sex of baby predictor. The Chinese Calendar for Baby Gender Throughout the centuries, numerous hypotheses about how the human gender can be set have been formulated. Please explain me details my dob is my last period date is 24th june I wanted to conceive baby boy. Thank you!!!! Boys would bring more money into the family by working in fields, while girls stayed home until they got married. Will test in the morning if I haven't come on by then It is said that Baby Gender Predictor for using the Chinese chart has a high degree of accuracy, despite no scientific evidence to support high level of accuracy. Your cycle is measured from the first day of your menstrual period to the first day of the following menstrual period. You will get: This ancestral method calls for using a chart often called the Chinese calendar of pregnancy. My dob is 10 November How it works.