fix bug in select_experiment page

webserver.py

@@ -380,7 +380,7 @@ a {
                     showtitle = 1
             else:
                 daterange = begdate if begdate == enddate else f'{begdate}...{enddate}'
-                if end > now - ONEMONTH:
+                if end < now - ONEMONTH:
                     if showtitle == 1:
                         title('older than 30 days')
                         showtitle = 2