diff --git a/protected/humhub/docs/CHANGELOG.md b/protected/humhub/docs/CHANGELOG.md
index 04db4a961d..8facba8ca8 100644
--- a/protected/humhub/docs/CHANGELOG.md
+++ b/protected/humhub/docs/CHANGELOG.md
@@ -32,7 +32,7 @@ HumHub Change Log
 - Enh: Added `Modal::closable` in order to respect `backdrop` and `keyboard` data setting of `Modal` and `ModalDialog` widget
 - Enh: Avoid cutting oembed entry in stream if it's the first part of a richtext 
 - Enh: Added `humhub/widgets/TimePicker` widget
-
+- Enh: Added `DbDateValidator::timeZone` for setting input time zone
 
 1.2.1 (June 17, 2017)
 - Fix: Invite error in french language
diff --git a/protected/humhub/libs/DbDateValidator.php b/protected/humhub/libs/DbDateValidator.php
index 203b682e3d..49230f7dd4 100644
--- a/protected/humhub/libs/DbDateValidator.php
+++ b/protected/humhub/libs/DbDateValidator.php
@@ -33,11 +33,22 @@ class DbDateValidator extends \yii\validators\DateValidator
      */
     public $timeAttribute = '';
 
+    /**
+     * @var defines the source time zone which is by default the user time zone, this can be used if a form uses an own
+     * timestamp setting.
+     */
+    public $timeZone;
+
     /**
      * @inheritdoc
      */
     public function validateAttribute($model, $attribute)
     {
+        // If no source timeZone
+        if(empty($this->timeZone)) {
+            $this->timeZone = (!\Yii::$app->formatter->timeZone) ? \Yii::$app->timeZone : \Yii::$app->formatter->timeZone;
+        }
+
         $timestamp = $this->parseDateTimeValue($model->$attribute, $this->getTimeValue($model));
 
         if ($timestamp === false) {
@@ -118,15 +129,14 @@ class DbDateValidator extends \yii\validators\DateValidator
 
         if ($this->hasTime() && $timeValue != "") {
             $timestamp += $this->parseTimeValue($timeValue);
-            $timeZone = (!\Yii::$app->formatter->timeZone) ? \Yii::$app->timeZone : \Yii::$app->formatter->timeZone;
-            $timestamp = $this->fixTimestampTimeZone($timestamp, $timeZone);
+            $timestamp = $this->fixTimestampTimeZone($timestamp, $this->timeZone);
         }
 
         return $timestamp;
     }
 
     /**
-     * Converts a timestamp in user timezone to a utc timestamp
+     * Converts the given timestamp from user (or configured) timezone to a utc timestamp
      *
      * @param long $ts the timestamp
      * @param String $timeZone users timezone
@@ -153,7 +163,7 @@ class DbDateValidator extends \yii\validators\DateValidator
      */
     protected function parseTimeValue($value)
     {
-        return strtotime($value . ':00') - strtotime('TODAY');
+        return strtotime($value) - strtotime('TODAY');
     }
 
     /**