Query with Date & TIME

Question

Dear All,
I need to retreive data between date and time for which here is my where clause, which is not retreiving any data.
WHERE TRUNC(M.MR_DATE) BETWEEN :START_DATE AND :END_DATE
AND TO_CHAR(M.MR_DATE, 'HH24:MI') BETWEEN '23:00' AND '07:00'
Please help.
Thanks
Ahon
Please note: if I make the "time format" in reverse it is showing data:
WHERE TRUNC(M.MR_DATE) BETWEEN :START_DATE AND :END_DATE
AND TO_CHAR(M.MR_DATE, 'HH24:MI') BETWEEN '07:00' AND '23:00'

Answer 1

Thanks everyone,
to get the result I change the query something like below but it is showing same line item 2 times for each query which is correct, is there any way to bring them into one line.
SELECT D.DIV_ID, D.GRP_ID, D.ITM_ID, SUM(D.SENT_QTY)QTY, SUM(NVL(D.ITEM_TOT,0))GROSS, SUM(NVL(D.ITEM_COVRG,0))COVER,
SUM(NVL(D.TRAN_AMOUNT,0))CASH
FROM INV.SELL_OUT_DOCS M, INV.SELL_OUT_LINES D
WHERE TRUNC(M.MR_DATE) BETWEEN '20-FEB-2010' AND '20-FEB-2010'
AND TO_CHAR(M.MR_DATE, 'HH24:MI') BETWEEN '23:00' AND '24:00'
AND (M.MR_SERIAL=D.MR_SERIAL)
GROUP BY D.DIV_ID, D.GRP_ID, D.ITM_ID
UNION
SELECT D.DIV_ID, D.GRP_ID, D.ITM_ID, SUM(D.SENT_QTY)QTY, SUM(NVL(D.ITEM_TOT,0))GROSS, SUM(NVL(D.ITEM_COVRG,0))COVER,
SUM(NVL(D.TRAN_AMOUNT,0))CASH
FROM INV.SELL_OUT_DOCS M, INV.SELL_OUT_LINES D
WHERE TRUNC(M.MR_DATE) BETWEEN '20-FEB-2010' AND '20-FEB-2010'
AND TO_CHAR(M.MR_DATE, 'HH24:MI') BETWEEN '00:01' AND '07:00'
AND (M.MR_SERIAL=D.MR_SERIAL)
GROUP BY D.DIV_ID, D.GRP_ID, D.ITM_ID
ORDER BY GRP_ID,ITM_ID
result is something like this
P CNS 2709 (DIV_ID, GRP_ID, ITM_ID) 1 (QTY)
P CNS 2709 (DIV_ID, GRP_ID, ITM_ID) 3 (QTY)
Thanks for the help
Ahon