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    <p><strong>NEW SOLUTION SEE BELOW!</strong></p> <p>If you know the timezone you can simply "add" it to your time.</p> <p>For example:</p> <p>server time: 01/01/01 00:00 the time the user wants: 01/01/01 01:00 the timezone of the user: GMT - 5</p> <p>Just get the time (01/01/01 01:00) and add +5 => 01/01/01 06:00</p> <p>So: your script needs to be executed at 01/01/01 06:00</p> <p>(convert to timestamp where needed)</p> <p>Added a little php to demonstrate</p> <pre><code>&lt;?php $servertime = time(); //timestamp of 01/01/01 00:00 $usertime = "01/01/01 06:00";//database $userUTC = "-5";//database strreplace($userUTC, "-", "+"; $replacetext = $userUTC . " days"; $usertime = strtotime($replacetext, $usertime);//now usertime is in your local timezone $crontime = date("d/m/Y H:i");//the time you want the script to be executed ?&gt; </code></pre> <p>I'm just assuming that the timezone is saved as "-5" for example and not Europe/Amsterdam Just tell me if i'm wrong.</p> <p>edit 14:37</p> <p>This could be a even better solution i think!</p> <pre><code>&lt;?php $usertime = "01/01/01 06:00"; $userUTC = "-5"; $userdate = $usertime . " " . $userUTC; $usertimestamp = strtotime($userdate);//now you have the timestamp with correct timezone $crontime = date("d/m/Y H:i", $usertimestamp);//formatted to the right date echo $crontime; ?&gt; </code></pre> <p>Edit: 25-07-2013 14:26</p> <p>New solution to suit your database:</p> <pre><code>&lt;?php $usertime = "01/01/01 06:00"; $userUTC = "Pacific/Auckland";//get from database $userdate = $usertime . " " . $userUTC; $usertimestamp = strtotime($userdate);//now you have the timestamp with correct timezone $crontime = date("d/m/Y H:i", $usertimestamp);//formatted to the right date echo $crontime; ?&gt; </code></pre>
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    1. POServer Time - driving me nuts :-)
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    1. POServer Time - driving me nuts :-)
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    1. COWouldnt I need to convert the users future time into a timestamp first? e.g. $futuredate = new DateTime('2013-08-05 11:30', new DateTimeZone('Pacific/Auckland')); $newdate = $futuredate->format('Y-m-d H:i:s'); $timestamp = strtotime($newdate);
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    2. COYes: i was just giving an idea how to proceed. You can either convert it to a timestamp and add the equivalent of 5 hours or ust the gmdate() function where you can add a offset like explained in the anwser of liyakat
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    3. CONewbie question - why 5 hours specifically? Wouldn't the time difference be + or - 5 hours for daylight savings PLUS an additional location specific difference? Sorry to be so inept at time calculations.
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