# Playground: elapseTime()
Simulates the flow of time in the engine, elapses a given amount of seconds in the engine's local date, this will trigger the respective market ticks between the previous local date and the new local date.
class MidaPlaygroundEngine {
elapseTime (seconds: number): Promise<MidaTick[]>;
}
engine.localDate; //= 2022-01-12:00:00:00.000Z
engine.on("tick", (event) => {
console.log("Tick!");
});
const { elapsedTicks, } = await engine.elapseTime(60); //= Elapse 1 minute
engine.localDate; //= 2022-01-12:00:01:00.000Z