SQL0206N, case statement and time calculation

[DTV12345]

Hello!

I am attempting to create a query that calculates a time value from GMT to
Pacific time. It is, of course, based on the calendar date that I will
have to figure out whether or not daylight savings applies (i.e. subtract
7 or 8 hours to get Pacific time).

In this query below, "LVDURATION.START_TIME" is expressed in GMT time: I have to present it in the query output as Pacific time.

SELECT
LVDURATION.PGM_DESIGNATOR,
PROGRAM_GUIDEREP.TITLE,
SUM(LVDURATION.DURATION)/60 AS "TOTAL_DURATION_IN_MINUTES",
COUNT (DISTINCT CAST(LVDURATION.ACCOUNTID AS CHAR(15))) AS
"TOTAL_ACCOUNTS",
LVDURATION.CONTCHANID,
LVDURATION.DAY_EASTERN,
CASE
WHEN day(CURRENT_DAY) = 1 and month(CURRENT_DAY) = 4
THEN        LVDURATION.START_TIME - 7 HOURS
WHEN day(CURRENT_DAY) = 1 and month(CURRENT_DAY) = 11
THEN        LVDURATION.START_TIME - 8 HOURS
END "START_TIME"
FROM
AMS.LVDURATION LVDURATION,
AMS.PROGRAM_GUIDEREP PROGRAM_GUIDEREP
WHERE
PROGRAM_GUIDEREP.PGM_DESIGNATOR = LVDURATION.PGM_DESIGNATOR
AND LVDURATION.DAY_EASTERN=CAST(LVDURATION.START_TIME AS DATE)
GROUP BY
LVDURATION.PGM_DESIGNATOR,
PROGRAM_GUIDEREP.TITLE,
LVDURATION.CONTCHANID,
LVDURATION.DAY_EASTERN,
LVDURATION.START_TIME

When I ran this, I got this error message: ``SQL0206N "CURRENT_DAY" is
not valid in the context where it is used. ``

I cannot see what I am doing wrong. Can someone please provide a few
pointers? My configuration is:

IBM DB v9.1
Linux RH

Thanks.

AB.

[DTV12345]

Never mind...all I have to do is use CURRENT_DATE instead of CURRENT_DAY.

It works fine now.