Clock 13 combines aspects of Clock 6 and Clock 11.
It occurs to me to observe that while I frequently make a distinction between agent based and physics clocks, some clocks involve both types of entities and, in fact, they are not really distinct. Early physics was plagued by questions of whether particle motion was somehow directed by spirits. While we have a deeper understanding of physics these days, with quantum fields or more exotic notions replacing telological accounts of why, for instance, electrons move away from one another, in terms of a simulation, it hardly matters.