I am using the below segment in my query :-
to_date(PROCESS_DATE, 'dd/mm/yyyy hh24:mi:ss'))
BETWEEN to_date(START_DATE, 'dd/mm/yyyy hh24:mi:ss') and
to_date(END_DATE, 'dd/mm/yyyy hh24:mi:ss')
but it seems to be ignoring the time part, as it is returning both the below results, which seems to indicate it is only looking at the date element, rather than date and time, hence returning both results.