How can PHP developers accurately calculate and display time in regions without daylight saving time, such as Mongolia?

When dealing with regions without daylight saving time, such as Mongolia, PHP developers can accurately calculate and display time by using the DateTime class with the appropriate timezone set to 'Asia/Ulaanbaatar'. This ensures that the time is displayed correctly without any adjustments for daylight saving time.

// Set the timezone to Asia/Ulaanbaatar
date_default_timezone_set('Asia/Ulaanbaatar');

// Create a new DateTime object with the current time
$now = new DateTime();

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