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<!DOCTYPE html> <html> <body> <p>Clck the button to display "Good day", only if the time is less than 20:00.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { var time = new Date().getHours(); if (time < 20) { document.getElementById("demo").innerHTML = "Good day"; } } </script> </body> </html>