https://timezonedb.com/references/list-time-zone
<?php $API_KEY = 'HRIPW4N2PQVV'; $r=file_get_contents("http://api.timezonedb.com/v2/list-time-zone?key=$API_KEY&format=json&zone=Asia/Ho_Chi_Minh"); $r=json_decode($r,1); print_r(date("Y-m-d H:i:s A",$r["zones"][0]["timestamp"]));