diff --git a/plugins/talks.py b/plugins/talks.py
index 8339033..3e37d3e 100644
--- a/plugins/talks.py
+++ b/plugins/talks.py
@@ -180,11 +180,24 @@ class TalkListDirective(Directive):
     def run(self):
         lang = self.options.get('lang', 'C')
         tmpl = jinja_env().get_template('talk.html')
+
+        def _sort_date(name):
+            '''
+            This function is a helper to sort talks by start date
+
+            When no date is available, put at the beginning
+            '''
+            d = get_talk_data(name)
+            if 'time' in d:
+                return d['time']
+            return datetime.datetime(1, 1, 1)
+
         return [
             nodes.raw('', tmpl.render(lang=lang, **get_talk_data(n)),
                       format='html')
-            for n in get_talk_names()
-        ]
+            for n in sorted(get_talk_names(),
+                            key=_sort_date)
+                                                                ]
 
 
 class TalkDirective(Directive):