Cameo Simulation Toolkit includes a (basic) TimeEvent, but fUML-1.3/1.4 does not. There are many different supported time units for duration constraints, and you can also use property values in durations.
UML2 ValueSpecification - metaclasses - ADVANCED REFERENCE ONLY This content has been marked as discussing an ADVANCED topic! Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 01:02: UML 101 for model-based systems engineering with SysML Slide kind UML Profile Diagram