How to run a query between dates and times?

Question

I have a query where I need to pull information from two different dates and times.
I want to pull everything that was date last modified between yesterday and today and between the time last modified of 18:00:00 hours from yesterday and 13:00:00 hours of today.

How can I accomplish this?

  SELECT A1.CHCASN, 
         A1.CHTRKN,
         SUM(A2.CDPAKU) AS UNITS, 
         A1.CHACWT, 
         SUM(A2.CDPRC * A2.CDPAKU) AS COST, 
         SUM(A3.STRPRC * A2.CDPAKU) AS RETAIL, 
         A1.CHDLM, 
         A1.CHTLM
    FROM CHCART00 A1, 
         CDCART00 A2, 
         STSTYL00 A3
   WHERE A1.CHCASN = A2.CDCASN
     AND A2.CDSTYL = A3.STSTYL
     AND A2.CDCOLR = A3.STCOLR
     AND A2.CDSDIM = A3.STSDIM
     AND A1.CHSTAT = '25'
     AND A1.CHROUT = 'UPSCA'
     AND A1.CHDLM BETWEEN 20110505 And 20110506
     AND A1.CHTLM >= '160000'
     AND A1.CHTLM <= '130000'
GROUP BY A1.CHCASN, A1.CHTRKN, A1.CHACWT, A1.CHDLM, A1.CHTLM
ORDER BY A1.CHCASN