Tonight is the last night when Venus and Saturn will be visible in the same binocular field. Look southwest about an hour and a half after sunset to see the two shining together. Venus will be easiest to spot, because of its intense luminosity. Saturn’s coordinates will be Right Ascension: 2h 42m 21s | Declination:  83° 32.400′. For more information, visit EarthSky.org. It will be an exciting opportunity to see the two together! 

The Five Visible Planets in September:

http://earthsky.org/astronomy-essentials/visible-planets-tonight-mars-jupiter-venus-saturn-mercury