Set timezone to Dutch, as this is how the dates were recorded

Author: ricbra

src/ResponseParser.php

@@ -33,11 +33,11 @@ function (&$v) {
 
                 $station = $arr[0];
                 if ($isHourly) {
-                    $date = \DateTime::createFromFormat('Ymd', $arr[1]);
+                    $date = \DateTime::createFromFormat('Ymd', $arr[1], new \DateTimeZone('Europe/Amsterdam'));
                     $date->setTime($arr[2], 0, 0);
                     $ret['datetime'] = $date->format(\DateTime::ISO8601);
                 } else {
-                    $date = \DateTime::createFromFormat('Ymd', $arr[1]);
+                    $date = \DateTime::createFromFormat('Ymd', $arr[1], new \DateTimeZone('Europe/Amsterdam'));
                     $ret['date'] = $date->format('Y-m-d');
                 }
                 $values = array_splice($arr, $isHourly ? 3 : 2);