gistfile1.php

<?php
       // 0:00 1/1/2011 UTC
       $some_time = 1293840000;
       $some_timezone = 'Europe/Moscow';

       date_default_timezone_set($some_timezone);

       require('Twig/lib/Twig/Autoloader.php');
       Twig_Autoloader::register();

       $loader = new Twig_Loader_String();
       $twig = new Twig_Environment($loader);
       $template = $twig->loadTemplate("TWIG: The time in {{ some_timezone }} at 0:00 1/1/2011 UTC was: {{ some_time|date('r') }}");

       header('Content-type: text/plain');

       var_dump($template->render(array('some_time' => $some_time, 'some_timezone' => $some_timezone)));

       var_dump('NATIVE: The time in '.$some_timezone.' at 0:00 1/1/2011 UTC was: '.date('r', $some_time));