SIMULATION SYSTEM, SIMULATION PROGRAM, AND SIMULATION METHOD

A plurality of time wheels, in which a plurality of step sizes of time evaluated as subsequent times in discrete time are set as tags and an event is registered in association with the tags, are generated as a hierarchical time wheel to correspond to a start-up time of the event ranging over a plurality of time tiers having different time units; the event is registered in association with the tags of the plurality of time wheels of the hierarchical time wheel; an error generated between the start-up time stored in the event and the start-up time at which the event is actually started is adjusted on the basis of a difference between a first designated position indicating a current time set in advance for a first time wheel corresponding to any of the time tiers of the hierarchical time wheel, and an n-th designated position indicating a current time set in advance for an n-th time wheel corresponding to a lower-order time tier than the first time wheel; and the event associated with the tags is started when the first designated position of the first time wheel and the n-th designated position of the n-th time wheel coincide with the start-up time of the event.