note 83038 added to function.strtotime

British/European summer time starts on the last Sunday in March and ends on the last Sunday in October, at 01:00 GMT. While I could use date("I") to determine whether a date is in summer time or not, my server is on American time and American daylight savings uses different rules. I needed to determine whether a given date falls within the British Summer Time season, and if so convert it back to GMT. This works for me: <?php function BST_finder ($dt) { $BSTstart=strtotime("last Sunday",gmmktime(0,0,0,4,1))+3600; // plus 3600 seconds to make it 1 a.m. $BSTend=strtotime("last Sunday",gmmktime(0,0,0,11,1))+3600; if ($dt>=$BSTstart and $dt<=$BSTend) { $dt=$dt-3600; } return $dt; } $date="2008-10-04 02:45:00"; $dt=strtotime($date); $corrected_date=BST_finder($dt); $pretty_date=date("Y-m-d H:i:s",$corrected_date); // 2008-10-04 01:45:00 ?> (built upon Ian Fieggen's comment below) ---- Server IP: 64.71.164.2 Probable Submitter: 70.113.21.57 ---- Manual Page -- http://www.php.net/manual/en/function.strtotime.php Edit -- https://master.php.net/note/edit/83038 Del: integrated -- https://master.php.net/note/delete/83038/integrated Del: useless -- https://master.php.net/note/delete/83038/useless Del: bad code -- https://master.php.net/note/delete/83038/bad+code Del: spam -- https://master.php.net/note/delete/83038/spam Del: non-english -- https://master.php.net/note/delete/83038/non-english Del: in docs -- https://master.php.net/note/delete/83038/in+docs Del: other reasons-- https://master.php.net/note/delete/83038 Reject -- https://master.php.net/note/reject/83038 Search -- https://master.php.net/manage/user-notes.php