best days for couple to get children - kids

 from puranas 

Copulation Prohibited on Certain Days

According to the scriptures the best time for a married couple to copulate is after the woman has had her menstruation, especially till sixteen days after her periods have commenced are considered best for this purpose. But, there are also certain days on which making sexual contacts is prohibited- the first four days after her periods have started. 

Ashtami, Chaturdashi, Amavasya and Purnima are few such days. 

If the above given rules are followed then a couple can beget worthy sons possessing good qualities. Considering the fact that a woman has sexual urge eight times more than a man, scriptures have also advised a man not to overlook the sexual urge of his wife and to satisfy her without bothering about the prohibited days.