So patterns are the same as being able to fly a square box on the PTS or whatever it is called now.
We have a place that happens to be 1.25 km off the downwind threshold of the popular lunch place. So if a plane is inside, over or outside the I know what size their pattern is.
droidefb tracks all your flights and uploads them to the interweb.
my downwinds are 0.8 miles wide. (lets not count last night getting night current as those were very sucky patterns)
So if you are in a cessna 172 flying a 1.5 mile from the runway downwind, are you proficient? or just doing what you learned?