An Object Petri Net (OPN) model for coordination of multiagent systems based on fuzzy clocks is introduced The OPN model takes a refined design-to-time approach in real-time scheduling of Concurrent Engineering (CE) projects Agent tasks are subdivided into required and optional subtasks to take advantage of the imprecise nature of the computation performed by an agent Concurrent with each agent is a fuzzy clock which measures the timeliness of an agent-task relative to temporal intervals and prescribed deadlines In the context of a CE project, agents cooperate with a coordinator in managing their time, and in periodically supplying tasking status reports for a blackboard The blackboard is handled by a subagent of the coordinator Performance is measured in terms of elapsed times, deadlines, Quality-of-Product statistics, capabil ity, consumption of resources, amount of work done, and difficulty of a task The coordinator also maintains a collection of concurrent, hybrid Fuzzy Watchdog Clocks (hFWC) which provide useful statistics (current fuzzy time, elapsed time, and percent of allowed time for each agent) posted on the blackboard The contribution of this article is the introduction of fuzzy clocks in constructing timetables for project tasks and in mak ing appropriate adjustments in the overall schedule whenever agents fail, disappear, or are in conflict