SQL for Inserting the system date and a fixed time (not the system time) in a column I have a query like this:

Insert into UNITRIP (START_TIME, END_TIME)
   (TO_DATE('10/20/2015 06:05:00', 'MM/DD/YYYY HH24:MI:SS'), TO_DATE('10/20/2015 07:34:06', 'MM/DD/YYYY HH24:MI:SS')


I require a sql where the start_time is of this type: system-date 06:05:00 (fixed date is to be replaced by sysdate).

How to write a query for this?
If you're asking for an expression that returns 6:05am on the current day

trunc(sysdate) + interval '6:05' hour to minute