"date" is the Tag where it's stored the information of the date I want to use for the timestamp with the format I have specified in the pattern file.
Yes, but what's the contents of the field for an example line of input? Before debugging the date filter's configuration, let's make sure the input is correct.
I have noticed that the poblem is in Kibana, it appears at January 22nd 2014, 14:20:08.799 when I send 2014/09/22 14:20:08.799 [old_logs_app].... How could it be?
Oh. Your date pattern is YYYY/MM/DD but is should be YYYY/MM/dd.