- var_dump: documentation ( source)
<?php
// Everything you enter here will be executed by our servers. Try it!
var_dump(DateTime::createFromFormat('Y-m-d\\TH:i:s\\Z', '1970-02-01 18:00:00', new DateTimeZone('Europe/Moscow'))->setTimezone(new DateTimeZone('UTC'))->format('Y-m-d\\TH:i:s\\Z'));
var_dump(DateTime::createFromFormat('Y-m-d\\TH:i:s\\Z', '1970-02-01 18:00:00', new DateTimeZone('Europe/London'))->setTimezone(new DateTimeZone('UTC'))->format('Y-m-d\\TH:i:s\\Z'));