title: Epoch millis kibana mapping 1970 year problem
body: <p>Im new to ELK Stack and i am facing this problem. Whenever i try to map timestamp from csv file (im mapping in kibana with epoch_millis) in my field all the dates start with  18january 1970, not the year of the timestamp. How can I get rid of this  or should I map it differently? Should I do something in the logstash? I am aware od that that this epoch have something to do with this 1970 year, but is there any other way to map this type of timestamp 1545003901 ? </p>