Set timezone on DateTime object not in constructor

Passing in the DateTimeZone object via the DateTime constructor defines what timezone the passed date string is and not converting the time

Author: NathMorgan

lib/internal/Magento/Framework/Stdlib/DateTime/Timezone.php

@@ -196,7 +196,8 @@ public function date($date = null, $locale = null, $useTimezone = true, $include
     public function scopeDate($scope = null, $date = null, $includeTime = false)
     {
         $timezone = $this->_scopeConfig->getValue($this->getDefaultTimezonePath(), $this->_scopeType, $scope);
-        $date = new \DateTime(is_numeric($date) ? '@' . $date : $date, new \DateTimeZone($timezone));
+        $date = new \DateTime(is_numeric($date) ? '@' . $date : $date);
+        $date->setTimezone(new \DateTimeZone($timezone));
         if (!$includeTime) {
             $date->setTime(0, 0, 0);
         }