Funny, never thought of what I carry as a rotation. It's not so much a "rotation" as it is an EDC "Pool", I suppose...
In the last week, I've carried a custom Ogg slipjoint that I love. I've carried a little Leatherman Squirt as well, and I packed a Kershaw Scallion one day.
In the last month, you can add a Kershaw Leek that I packed more as a money clip, and a Camillus CUDA ArcLite neck knife that I had on for a couple days. My uncle bought me a little slipjoint that has a straight razor shaped blade on it, and somehow I packed it around for a few days.
It almost seems as though the Daily Carry is dictated by where I happen to be standing when I finish buttoning my pants or tying my shoes. I got a buttload of knives, and they are scattered from hell to breakfast around here. Any one of them can make it into my pocket without me even thinking about it, simply out of muscle memory.
How many knives in my EDC "rotation" ? After thinking about it, short answer is "I don't know".