A friend of mine saw a video that claimed the moon appears to be at the feet of the constellation Virgo about once every 17 years with its next occurrence being in September 2017. Is there any reliable sources that back this up? What I mean by a "reliable source" is an organization that speaks with authority on these matters such as NASA. I would prefer that it is available online, however I understand if it is not. If it is, please provide a direct link to it. If it is not online, please quote verbatim what it says about it, preferably in context. Also, here is a picture of what it might mean for the moon to be at the feet of Virgo (do note that the moon might not be to scale):
I think I understand the question, but don't really have an answer.
Mu Virgo, the southernmore of Virgo's two feet, has an ecliptic latitude of 9.678 degrees, meaning it's quite far north of the ecliptic.
The moon never ventures more than about 5.15 degrees from the ecliptic, so it will never be north of Mu Virgo, or even really that close.
The closest interpretation I can give: in some months, the moon's northernmost ecliptic latitude will occur near Mu Virgo, putting it "close" to Virgo's feet.
If you run http://ssd.jpl.nasa.gov/?horizons with these settings:
you can get a rough idea of where the moon's ecliptic latitude is maximal for each month. Of course, you can refine these settings to get more accuracy.
In theory, you can use http://wgc.jpl.nasa.gov:8080/webgeocalc/#NewCalculation to get more exact values of when the moon is furthest north of the ecliptic, but I couldn't get this to quite work out (I didn't spend very long on it).
I don't see that the ecliptic latitude's maximal position is that much closer to Mu Virgo in September 2017, but didn't look carefully.