time formatting in oracle- output to excel format

select s.city_name city,s.state_code  st,
       initcap(mc.udf1)  county,
       to_char(drive_date,'MM/DD/RRRR') drive_date,
	   to_char(start_time,'HH12:MI AM') start_date,
	   to_char(end_time,'HH12:MI AM') end_date,
	   site_name as location,
                   s.addr_1 || '       ' ||s.addr_2 address,
                   first_name||' '||last_name||' '||'('||substr(phone_number,1,3)||')'
	   ||substr(phone_number,4,3)||'-'||substr(phone_number,7) contact,
	   case when coach_drive in ('C', 'M') then 'YES'
	        else 'NO' 
	   END mobile_coach,
	   group_name sponsoring_group,
decode(ONLINE_SCHED_DATE,null,null,'https://ht.heartlandbc.org/donor/schedules/drive_schedule/'||bd.drive_id) as weblink
   from blood_drives bd, sites  s , 
        master_codes mc, area_reps ar,groups g
  where drive_date between '01-mar-2015' and '31-mar-2015'
    and bd.site_code = s.site_code
	and ar.area_rep_id = bd.area_rep_no
	and sponsor_group_code = group_code
    AND OPEN_TO_PUBLIC = 'Y'
    AND DRIVE_CANCELLED IS NULL 
	and code_type = 'COUNT'
	and mc.code = s.county_code
	order by 1,4
	

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start date    end date

08:30 AM    01:00 PM

I need the time to be formatted to

8:30 AM       1:00 PM