date_default_timezone_set("Asia/Kolkata");
// List of Supported Timezones https://www.php.net/manual/en/timezones.php
echo date_default_timezone_get(); //UTC
//Read more at https://www.php.net/manual/en/function.date-default-timezone-get.php
date_default_timezone_set("Asia/Karachi");
//if you wand your timezone in whole website than go to config/app.php
// and serch for timezone, now pass your time zone. in my case
'timezone' => 'Asia/Karachi',
//Go to following link to find your timezone
// https://www.php.net/manual/en/timezones.asia.php