diff --git a/classes/Format.class.php b/classes/Format.class.php
index 54b8ec4..aa3f12a 100644
--- a/classes/Format.class.php
+++ b/classes/Format.class.php
@@ -176,5 +176,8 @@ class Format
     }
 }
 
-Format::setTimezoneOffset(date('Z'));
+/**
+ * Оффсет с учетом летнего/зимнего времени
+ */
+Format::setTimezoneOffset(date('Z') - ((date('I') ? 60*60 : 0 )));
 ?>
\ No newline at end of file