How To Display The Day For Another Timezone

[Manhag]

hello

i want to echo the date"day" of another timezone

 

i tried this but no change in day value

 

$day1 = date("Y-m-d H:i:s");

$day = new DateTime($day1, new DateTimeZone('Pacific/Fiji'));

echo "asd".$day->format('j')."asd";