Virgo represents a virgin girl. Virgo is the second largest constellation in the sky, and largest Zodiac constellation. It covers 1294 square degrees The best time to see Virgo is in mid-May at 10 P.M.
Sagittarius is a summer constellation --- the best time of the year is August to see it at 9pm. Sagittarius is also a Southern constellation: if you're in North America, it can be seen roughly towards the south and will not rise very high on the sky.