diff --git a/boards/models/source.py b/boards/models/source.py
--- a/boards/models/source.py
+++ b/boards/models/source.py
@@ -41,8 +41,9 @@ class ThreadSource(models.Model):
         if self.thread.is_archived():
             logger.error('The thread {} is archived, please try another one'.format(self.thread))
         else:
-            start_timestamp = timezone.localtime(self.timestamp)
+            start_timestamp = self.timestamp
             last_timestamp = start_timestamp
+            logger.info('Start timestamp is {}'.format(start_timestamp))
             if self.thread.is_bumplimit():
                 logger.warn('The thread {} has reached its bumplimit, please create a new one'.format(self.thread))
             if self.source_type == SOURCE_TYPE_RSS:
@@ -56,11 +57,11 @@ class ThreadSource(models.Model):
                     else:
                         if timestamp > last_timestamp:
                             last_timestamp = timestamp
-
                         if timestamp > start_timestamp:
                             Post.objects.create_post(title=title, text=item.description, thread=self.thread, file_urls=[item.link])
                             logger.info('Fetched item {} from {} into thread {}'.format(
                                 title, self.name, self.thread))
+            logger.info('New timestamp is {}'.format(last_timestamp))
             self.timestamp = last_timestamp
             self.save(update_fields=['timestamp'])