Online PHP editor | output for 2ELVj

<?php $tz = new DateTimeZone('Europe/London'); $date = new DateTimeImmutable('now', $tz); $time = 1509235200; $date1 = $date->setTimestamp($time - 1); $date2 = $date->setTimestamp($time); $date3 = $date->setTimestamp($time + 3600 - 1); $date4 = $date->setTimestamp($time + 3600); $date5 = $date->setTimestamp($time + 3600*2 - 1); var_dump($date1->format(DateTime::ATOM)); var_dump($date2->format(DateTime::ATOM)); var_dump($date3->format(DateTime::ATOM)); var_dump($date4->format(DateTime::ATOM)); var_dump($date5->format(DateTime::ATOM));