What are some common pitfalls for beginners when using PHP to manipulate and display date and time information?

One common pitfall for beginners when using PHP to manipulate and display date and time information is not accounting for time zones. It's important to set the correct time zone in your PHP script to ensure accurate date and time calculations and displays.

// Set the default time zone to UTC
date_default_timezone_set('UTC');

// Get the current date and time in the specified time zone
$now = new DateTime('now');

// Display the current date and time in the specified time zone
echo $now->format('Y-m-d H:i:s');