First we need a table. At the intersection of the required column and line, you need to find the figure.
Now we look at the Japanese calendar of planning the sex of the child. We find our figure horizontally, the column in the middle is the gender of the child. We look at the changes in the vertical scale corresponding to our figure. And choose the most suitable month. For example, mom and dad of the future crumbs were born in November, they correspond to number 11. In February, the boy has more than christics, and under July — the girl.