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<!DOCTYPE html> <html> <body> <h1>JavaScript Temporal.PlainDate</h1> <h2>The withCalendar() Method</h2> <p>The withCalendar() method returns a new PlainDate representing this PlainDate in a new calendar system.</p> <p id="demo"></p> <script> const date = Temporal.PlainDate.from("2026-05-17T14:30:00"); const newDate = date.withCalendar("islamic-umalqura"); document.getElementById("demo").innerHTML = newDate.toString(); </script> </body> </html>
