- printf: documentation ( source)
<?php
$dateTimeEast = new DateTime('today', new DateTimeZone('Asia/Ulaanbaatar'));
$dateTimeWest = new DateTime('today', new DateTimeZone('Asia/Hovd'));
printf(
'Mongolei Ost: %s, Mongolei West: %s',
$dateTimeEast->format('c'),
$dateTimeWest->format('c')
);