What are the best months for viewing the constellation Leo?

i need it for a science project.What are the best months for viewing the constellation Leo?Leo is invisible when the Sun stands in that area. (This is almost the same moment as the dates for leo in horoscopes.) So a few months after that moment, Leo is visible rising in East during mornings. A few months before that moment, Leo is visible setting in the West. Opposite that moment (a half year later), Leo is at midnight highest in the south. So Leo in particular is the best visible around Spring.What are the best months for viewing the constellation Leo?Now, after midnight, and two hours earlier every month for the next four to six months.