Q:

Kibana discover no results found

I have installed elk stack with x-pack feature, and shipping logs with filebeat.  Everything is looks good , i was able to see logs in kibana -discover  last night and this morning i logged into kibana and can't see any single log.  it showing as no result found i used same index pattern which is used in last night 
Then again i shipped some logs with filebeat those are appeared in kibana and after 1 hour time those are disappeared i can't see logs again ?  can anyone suggest what's happening

A:

I was looking at an index with a date field, I adjusted time range with timepicker button in the top right corner of your screen.  it's working good 

