Though it's not intended for this purpose I discovered how to use the PAT software
to display a graph showing the course of a planet through a sign. The graph for Saturn in Scorpio during 2012-2014 (see the attached image) shows Saturn entering Scorpio in October 2012, turning retrograde early in 2013, turning direct in mid-2013, reaching 15 degrees Scorpio in November 2013, turning retrograde again early in 2014 and leaving Scorpio in December 2014.
Pluto enters Capricorn in January 2008 and remains there until March 2023, with the usual annual retrograde motion. So from October 2012 until December 2014 we have Saturn in Scorpio and Pluto in Capricorn.