Justin Cranford <justincranford(at)hotmail(dot)com> writes:
> In summary, the issue is PostgreSQL 9.5 ignores my DateStyle setting in postgresql.conf during startup.
Works for me. I speculate that your setting is being overridden from
somewhere --- try looking at the source-location fields in
select * from pg_settings where name = 'DateStyle';
to figure out where.
regards, tom lane