diff --git a/Gallery.Util/Extensions.cs b/Gallery.Util/Extensions.cs
index 498297d..65579cd 100644
--- a/Gallery.Util/Extensions.cs
+++ b/Gallery.Util/Extensions.cs
@@ -99,13 +99,13 @@ namespace Gallery.Util
         public static DateTime ToLocalTime(this long time)
         {
             //return new DateTime(1970, 1, 1, 0, 0, 0).AddMilliseconds(time).ToLocalTime();
-            return new DateTime(621355968000000000L + time * 10000).ToLocalTime();
+            return new DateTime(621355968000000000L + time * 10000000).ToLocalTime();
         }
 
         public static long ToTimestamp(this DateTime datetime)
         {
             var ticks = datetime.Ticks;
-            return (ticks - 621355968000000000L) / 10000;
+            return (ticks - 621355968000000000L) / 10000000;
         }
     }
 }