And then there are locales that have implemented a set of DST rules that are 
1/4 hour, not full hour, adjustments.
For example, I believe I read on the IANA site about time zones that Nepal is a 
00:15 or maybe 00:45 adjustment when DST kicks in and out.

Charles (Chuck) Hardee
Senior Systems Engineer/Database Administration
CCG Information Technology
Thermo Fisher Scientific
300 Industry Drive
Pittsburgh, PA 15275
Direct: 724-517-2633
FAX: 412-490-9230
[email protected]


-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf 
Of retired mainframer
Sent: Friday, June 27, 2014 7:47 PM
To: [email protected]
Subject: Re: Local Time conversion to/from UTC Time

If it were only that easy.  Parts of Texas are in two different time zones.
I believe at least one other state is split also.  Some states in Australia
implement DST while others don't.  Russia spans multiple time zones while
all of China is administered in one.

:>: -----Original Message-----
:>: From: IBM Mainframe Discussion List [mailto:[email protected]] On
:>: Behalf Of Skip Robinson
:>: Sent: Friday, June 27, 2014 3:37 PM
:>: To: [email protected]
:>: Subject: Re: Local Time conversion to/from UTC Time
:>:
:>: DST complicates your solution even further. While the whole of the U.S.
:>: switches (or not!!!) at the same moment, other countries switch on
:>: different dates. I think your solution will have to be table driven with
:>: an entry for every country and for every U.S. state.

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