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<!DOCTYPE html> <html> <body> <h2>JavaScript Dates</h2> <p>The internal clock in JavaScript starts at midnight January 1, 1970.</p> <p>Date.now() returns the number of milliseconds since January 1, 1970 00:00:00 UTC:</p> <p id="demo"></p> <script> let ms = Date.now(); document.getElementById("demo").innerHTML = ms; </script> </body> </html>
