diff --git a/admin/write-js.php b/admin/write-js.php
index cd08a418..4719ce4e 100644
--- a/admin/write-js.php
+++ b/admin/write-js.php
@@ -152,6 +152,20 @@ $(document).ready(function() {
         submitted = true;
     }), savedData = null;
 
+    // 计算夏令时偏移
+    var dstOffset = (function () {
+        var d = new Date(),
+            jan = new Date(d.getFullYear(), 0, 1),
+            jul = new Date(d.getFullYear(), 6, 1),
+            stdOffset = Math.max(jan.getTimezoneOffset(), jul.getTimezoneOffset());
+
+        return stdOffset - d.getTimezoneOffset();
+    })();
+    
+    if (dstOffset > 0) {
+        $('<input name="dst" type="hidden" />').insertTo(form).val(dstOffset);
+    }
+
     // 自动保存
 <?php if ($options->autoSave): ?>
     var locked = false,
diff --git a/var/Widget/Contents/Post/Edit.php b/var/Widget/Contents/Post/Edit.php
index 54107db4..183464d1 100644
--- a/var/Widget/Contents/Post/Edit.php
+++ b/var/Widget/Contents/Post/Edit.php
@@ -127,7 +127,8 @@ class Widget_Contents_Post_Edit extends Widget_Abstract_Contents implements Widg
         if (!empty($this->request->created)) {
             $created = $this->request->created;
         } else if (!empty($this->request->date)) {
-            $created = strtotime($this->request->date) - $this->options->timezone + $this->options->serverTimezone;
+            $dstOffset = !empty($this->request->dst) ? $this->request->dst : 0;
+            $created = strtotime($this->request->date) - $this->options->timezone + $this->options->serverTimezone - $dstOffset;
         } else if (!empty($this->request->year) && !empty($this->request->month) && !empty($this->request->day)) {
             $second = intval($this->request->get('sec', date('s')));
             $min = intval($this->request->get('min', date('i')));