Timestamp array list covert hours minutes Seconds into setInterval time for each 1 seconds

Hi everyone facing one issue in my react application where I have array of list timestamp's ex:([1651234567, 1651234568, 1651234569]) which I need to convert in to hours minutes & seconds like Ex:([17:46:7, 17:46:8, 17:46:9]) each seconds timer should increase with help of But in my current scenario this logic is not working.

The below code I have defined timestamp state array & also In useEffect I’m calling setInterval time on every 1 second. But below code timer remain constant. Please help on this.

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.9.0/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.9.0/umd/react-dom.production.min.js"></script>

const ConvertTimer = () => {
    const [timestamp, setTimestamp] = useState([1651234567, 1651234568, 1651234569]);
  const [timeLeft, setTimeLeft] = useState([]);

  useEffect(() => {
    const timer = setInterval(() => {
      const newTimeLeft = timestamp.map((timestamp) => {
        const date = new Date(timestamp * 1000);
        const hours = date.getHours();
        const minutes = date.getMinutes();
        const seconds = date.getSeconds();
        return `${hours}:${minutes}:${seconds}`;
      });
      setTimeLeft(newTimeLeft);
    }, 1000);

    return () => clearInterval(timer);

    
  }, [timestamp]);
  return (
    <div>
      <h1>Time Left</h1>
      <ul>
        {timeLeft.map((time) => (
          <li key={time}>{time}</li>
        ))}
      </ul>
    </div>
  )
}