<!DOCTYPE html>
<html>
<body>
<h1>Show a Date and Time Control</h1>
<form action="/action_page.php">
<label for="birthdaytime">Birthday (date and time):</label>
<input type="datetime-local" id="birthdaytime" name="birthdaytime">
<input type="submit">
</form>
</body>
</html>