There has been a fair amount of traffic re: spring forward and falling
backward,
so I thought I'd post this job stream that one of our guys did a while
back.  Credit
to mike anderson, please.

[log in to unmask]



!JOB TIME,MANAGER.SYS,PUB;OUTCLASS=,1;PRI=DS
!COMMENT
!COMMENT ******  OPERATIONAL NOTES! ******
!COMMENT Changing the system time or time
!COMMENT zone will introduce any jobs
!COMMENT streamed with a time specification
!COMMENT (;AT=, ;DAY=,;DATE= or ;IN=) in
!COMMENT accordance with the newly-changed
!COMMENT system time. Thus, a job streamed
!COMMENT with ;AT=2:00 will be introduced
!COMMENT when the changed system time is
!COMMENT equal to 2:00.
!COMMENT
!COMMENT
!COMMENT In the spring when the time zone
!COMMENT is changed to a later time both
!COMMENT local time and the time zone offset
!COMMENT are changed immediately.
!COMMENT
!COMMENT The effect is that users of local
!COMMENT system time will see an immediate
!COMMENT jump forward to the new time zone,
!COMMENT while users of Universal Time will
!COMMENT see no change.
!COMMENT
!COMMENT In the fall the change in time zone
!COMMENT is to an earlier time. The time zone
!COMMENT offset is changed immediately.  Then
!COMMENT the local time slows down until the
!COMMENT system time corresponds to the time
!COMMENT in the new time zone.
!COMMENT
!COMMENT
!COMMENT **********************************************
!COMMENT * Change the system clock TO STANDARD TIME
!COMMENT * on the last Sunday in October.
!COMMENT * Change the system clock TO DAYLIGHT TIME
!COMMENT * on the first Sunday in April.
!COMMENT * 96/10/25 MJA - Initial development
!COMMENT **********************************************
!COMMENT * This job should be streamed at 2:00 am.
!COMMENT * On the last Sunday of October and
!COMMENT * on the first Sunday of April.
!COMMENT * It's OK to stream it every Sunday at 2:00 am.
!COMMENT **********************************************
!COMMENT
!showclock
!if hpday = 1 and hpmonth = 10 and hpdate > 24 then
!  SETCLOCK TIMEZONE = W6:00
!  TELLOP *********************************************
!  TELLOP Changing the system clock to STANDARD TIME.
!  TELLOP The clock will S L O W   D O W N until
!  TELLOP we havev fallen back one hour.
!  TELLOP *********************************************
!elseif hpday = 1 and hpmonth = 4 and hpdate < 8 then
!  SETCLOCK TIMEZONE = W5:00
!  TELLOP *********************************************
!  TELLOP Changing the system clock to DAYLIGHT TIME.
!  TELLOP The clock jumped ahead one hour.
!  TELLOP *********************************************
!endif
!showclock
!EOJ