Here is the job used in our site along with its scheduling entries in sleeper.

!job changclk,manager.sys;hipri;outclass=noprint
!comment
!comment   The sole function of this job stream is to adjust
!comment  the system time during the last Sunday of October
!comment  and the first Sunday of April.
!comment
!if hpday = 1 and hpmonth = 10 and hpdate > 24 then
!  setclock timezone = W8:00
!elseif hpday = 1 and hpmonth = 4 and hpdate < 8 then
!  setclock timezone = W7:00
!else
!  tellop **************
!  tellop * The 'Change Clock' job was submitted at the wrong *
!  tellop * date.  Investigate why
!  tellop **************
!endif
!eoj
**************************
Sleeper>> l

Select Record Range, Account Name and/or Match string
[First], [Last], [Account[![File Substring][$Today]]: (Cr=All) ?,,!changclk

CURRENT SLEEPER ENTRIES AS OF: WED, MAR 31, 1999,  8:38 AM        PAGE:   1
FOR:         @.@       (CHANGCLK)

-------------------------------------------------------------------------
REC#  33 (JSTREAM   ) On [SUN 10/31/1999] @ 00:55 For @  .SYS    Hflag=N
CHANGCLK.JOB.SYS                       <<ADJUST CLOCK DURING FALL
And repeat every 12 CALENDAR months, On the  last SUNDAY of the month
Created:  10/25/1995 15:46 by (MANAGER.SYS  ) Executed: 10/25/1998 00:55
Modified:                  by (             ) Job Number: #J2321
-------------------------------------------------------------------------
REC#  36 (JSTREAM   ) On [SUN 04/04/1999] @ 00:55 For @  .SYS    Hflag=N
CHANGCLK.JOB.SYS                       <<ADJUST CLOCK DURING SPRING
And repeat every 12 CALENDAR months, On the   1st SUNDAY of the month
Created:  10/25/1995 15:49 by (MANAGER.SYS  ) Executed: 04/05/1998 00:55
Modified:                  by (             ) Job Number: #J11640
-------------------------------------------------------------------------
     2  Entries qualified

Regards
Paul H. Christidis