diff --git a/app/code/core/Mage/Adminhtml/Block/Customer/Edit/Tab/View.php b/app/code/core/Mage/Adminhtml/Block/Customer/Edit/Tab/View.php
index 3367ae65e3c4..810a125f3c69 100644
--- a/app/code/core/Mage/Adminhtml/Block/Customer/Edit/Tab/View.php
+++ b/app/code/core/Mage/Adminhtml/Block/Customer/Edit/Tab/View.php
@@ -83,7 +83,7 @@ public function getCreateDate()
         if (!$date) {
             return null;
         }
-        return $this->formatDate(
+        return $this->_getCoreHelper()->formatTimezoneDate(
             $date,
             Mage_Core_Model_Locale::FORMAT_TYPE_MEDIUM,
             true,
@@ -122,7 +122,7 @@ public function getLastLoginDate()
     {
         $date = $this->getCustomerLog()->getLoginAtTimestamp();
         if ($date) {
-            return Mage::helper('core')->formatDate($date, Mage_Core_Model_Locale::FORMAT_TYPE_MEDIUM, true, false);
+            return Mage::helper('core')->formatTimezoneDate($date, Mage_Core_Model_Locale::FORMAT_TYPE_MEDIUM, true, false);
         }
         return Mage::helper('customer')->__('Never');
     }
@@ -260,7 +260,6 @@ public function isHidden()
      * Return instance of core helper
      *
      * @return Mage_Core_Helper_Data
-     * @deprecated
      */
     protected function _getCoreHelper()
     {
diff --git a/app/code/core/Mage/Core/Block/Abstract.php b/app/code/core/Mage/Core/Block/Abstract.php
index b9b8a8207c21..988331dd4342 100644
--- a/app/code/core/Mage/Core/Block/Abstract.php
+++ b/app/code/core/Mage/Core/Block/Abstract.php
@@ -1126,11 +1126,11 @@ public function helper($name)
      * @param   bool $useTimezone
      * @return  string
      */
-    public function formatDate($date = null, $format = Mage_Core_Model_Locale::FORMAT_TYPE_SHORT, $showTime = false, $useTimezone = true)
+    public function formatDate($date = null, $format = Mage_Core_Model_Locale::FORMAT_TYPE_SHORT, $showTime = false)
     {
         /** @var Mage_Core_Helper_Data $helper */
         $helper = $this->helper('core');
-        return $helper->formatDate($date, $format, $showTime, $useTimezone);
+        return $helper->formatDate($date, $format, $showTime);
     }
 
     /**
diff --git a/app/code/core/Mage/Core/Helper/Data.php b/app/code/core/Mage/Core/Helper/Data.php
index f24dd94b20f2..9e1bf90f0a2e 100644
--- a/app/code/core/Mage/Core/Helper/Data.php
+++ b/app/code/core/Mage/Core/Helper/Data.php
@@ -153,13 +153,26 @@ public function formatPrice($price, $includeContainer = true)
     /**
      * Format date using current locale options and time zone.
      *
-     * @param   string|Zend_Date|null $date If empty, return current datetime.
+     * @param   string|Zend_Date|null $date     If empty, return current datetime.
+     * @param   string              $format   See Mage_Core_Model_Locale::FORMAT_TYPE_* constants
+     * @param   bool                $showTime Whether to include time
+     * @return  string
+     */
+    public function formatDate($date = null, $format = Mage_Core_Model_Locale::FORMAT_TYPE_SHORT, $showTime = false)
+    {
+        return $this->formatTimezoneDate($date, $format, $showTime, true);
+    }
+
+    /**
+     * Format date using current locale options and time zone.
+     *
+     * @param   string|Zend_Date|null $date   If empty, return current datetime.
      * @param   string              $format   See Mage_Core_Model_Locale::FORMAT_TYPE_* constants
      * @param   bool                $showTime Whether to include time
      * @param   bool                $useTimezone Convert to local datetime?
      * @return  string
      */
-    public function formatDate($date = null, $format = Mage_Core_Model_Locale::FORMAT_TYPE_SHORT, $showTime = false, $useTimezone = true)
+    public function formatTimezoneDate($date = null, $format = Mage_Core_Model_Locale::FORMAT_TYPE_SHORT, $showTime = false, $useTimezone = true)
     {
         if (!in_array($format, $this->_allowedFormats, true)) {
             return $date;