Calendar is based on biological rhythms of baby's parents. If you, or your spouse, had any major blood transfusion in your life, this Baby Gender Predictor might not predict the sex of your baby correctly. To be more scientifically legitimate, I add that this gender prediction formula seems to be trying to determine which chromosomes will be stronger at the time of conception: female XX or male XY. All you need is to give your and your partner’s date of birth and you will get a 4-Year Gender Prediction Calendar. Previous year is included in case you are already pregnant and you can find out the gender of your baby. And if you are planning your baby - this calendar will help you to choose/influence the sex of you child for next 2-3 years. Boy or Girl! Just pick the month of conception. Depending on birthdays of the parents, for some months, both chromosomes might be equal in strength so during those months you will not be able to influence the gender of your baby and hence you get n/a.
Have fun choosing your baby's gender but remember that this Gender Prediction Calendar is provided for entertainment purposes only, is not endorsed by any medical expert and I make no claims as to its accuracy. It's just for fun. But amusingly enough it works! Or is it?
Check Baby Gender Prediction Test page where you can check the validity of this method by entering the birthdays of both parents and a child and comparing the result to the gender of that child. See Select Baby Gender page for some info about this baby gender prediction test. Check also Chinese Gender Calendar.