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<html lang="en">

<head>

  <meta charset="utf-8">

  <title>Date.UTC()</title>

</head>

<body>

  <h1>Basic Date.UTC()</h1>

  <pre id="out"></pre>

  <script>

    var ms = Date.UTC(2026, 2, 15, 12, 30, 45);

    var date = new Date(ms);

    document.getElementById("out").textContent =

      ms + "\n" + date.toISOString();

  </script>

</body>

</html>

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JavaScript Date.UTC() — basic (Try It)