Date time issue while sync up using Logstash from Oracle DB to Elasticsearch

Hi team,

I am using logstash for sync up data from Oracle Db to ElasticSearch index.
I am able to sync data but the issue is :
In Oracle db, I have 3 date fields. while syncing in ES index, they are storing as UTC.
I need to display the dates as it is which is in Oracle DB into the ES index.

I tried using timezone but not working.
Could you please help me?