Answers for "php how to work with date and different timezones"

php default timezone

date_default_timezone_set("Asia/Kolkata");
// List of Supported Timezones https://www.php.net/manual/en/timezones.php

php datetime set timezone

$date = new \DateTime();
$date->setTimezone(new \DateTimeZone('+0800')); //GMT
echo $date->format('Y-m-d H:i:s');
// 2020-11-20 15:23:49