method Date.setHours Private Date.setHours(hours: number,min?: number,sec?: number,ms?: number,): number Sets the hour value in the Date object using local time. Parameters hours: number A numeric value equal to the hours value. optional min: number A numeric value equal to the minutes value. optional sec: number A numeric value equal to the seconds value. optional ms: number A numeric value equal to the milliseconds value. Return Type number