Re: Where do I find a list of world timezones in z/OS USS notation?

[Paul Gilmartin]

On Thu, 26 Apr 2018 16:21:57 -0500, Juan Escamilla wrote:

>I had to change the Unix time zone values for several LPARS that run on 
>different timezones around the world.  I used the values from website 
>https://www.di-mgt.com.au/src/wclocktz.ini
> 
Thanks.  I bookmarked it.

Somewhat incomplete -- doesn't show Pyongyang, which has changed timezone
twice in the last three years:
http://mm.icann.org/pipermail/tz-announce/2018-May/50.html
https://en.wikipedia.org/wiki/Time_in_North_Korea
5 days advance notice!?

And a comment shows Beijing where ICANN shows Shanghai.

z/OS ought to adopt Olson time, like most other systems.

-- gil

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Re: Where do I find a list of world timezones in z/OS USS notation?

[Juan Escamilla]

I had to change the Unix time zone values for several LPARS that run on 
different timezones around the world.  I used the values from website 
https://www.di-mgt.com.au/src/wclocktz.ini

We used the following:

US systems:

TZ=EST5EDT,M3.2.0/2:00,M11.1.0/2:00
  
Brazil time: TZ=BRT3BRST,M10.3.0/0:01,M2.3.0/0:01
 
Melborne time for the Adalaide system: TZ=AEST-10AEDT,M10.1.0/2:00,M4.1.0/2:00 
 
Mexico runs on US Central Time:  TZ=CST6CDT,M3.2.0/2:00,M11.1.0/2:00
 
RUIPC2W: TZ=CET-1CEST,M3.5.0/2:00,M10.5.0/3:00   
 
RUIPC1K: TZ=GMT0BST,M3.5.0/1:00,M10.5.0/2:00

I hope this helps

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AW: Re: AW: Re: Where do I find a list of world timezones in z/OS USS notation?

[Peter Hunkeler]

>I totally agree, but we can't even get this country, USA to agree on a BAN on 
>DST, should have saved this discussion for Friday :)



Politicians and managers in Europe seem to begin to accept the uselessness of 
DST,  and the discussion about getting rid of it has started in the EU. It will 
of course take eons to come to a common understanding, not speaking about 
realizing the outcome.


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Re: Where do I find a list of world timezones in z/OS USS notation?

[Paul Gilmartin]

On Wed, 25 Apr 2018 13:13:57 -0500, Mike Schwab wrote:

>Hawaii and most of Arizona don't do DST (Summer Time).
>Florida is attempting to implement EDT / AST for the entire year.
>Of course the patchwork is due to politicians selecting which time
>zone and time changes.
> 
And if they do I'm confident that Olson database will provide a new locale
as a timely accommodatation, even as they did for Asia/Pyongyang (a
half-hour adjustment) and Pacific/Apia (a 24 hour! adjustment).  They
couldn't just use America/Halifax because that would be historically
incorrect.

-- gil

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Re: AW: Re: Where do I find a list of world timezones in z/OS USS notation?

[Mike Schwab]

Hawaii and most of Arizona don't do DST (Summer Time).
Florida is attempting to implement EDT / AST for the entire year.
Of course the patchwork is due to politicians selecting which time
zone and time changes.

On Wed, Apr 25, 2018 at 8:05 AM, Carmen Vitullo  wrote:
> I totally agree, but we can't even get this country, USA to agree on a BAN on 
> DST, should have saved this discussion for Friday :)
>
>
>
>
>
> Carmen Vitullo
>
> - Original Message -
>
> From: "Steve Smith" 
> To: IBM-MAIN@LISTSERV.UA.EDU
> Sent: Wednesday, April 25, 2018 8:02:10 AM
> Subject: Re: AW: Re: Where do I find a list of world timezones in z/OS USS 
> notation?
>
> What there should be is a world-wide ban on the lunacy of "daylight savings
> time".
>
> Yeah, I went there... knowing that this dead horse has been beaten to a
> puree, I should apologize for mentioning it.
>
>
> On Wed, Apr 25, 2018 at 4:33 AM, Giliad Wilf <
> 00d50942efa9-dmarc-requ...@listserv.ua.edu> wrote:
>
>> ...
>>
>
>> Seems there should have been a more generalized, better convention for
>> specifying back and forth daylight switching. Sigh.
>>
>> Many thanks to all who contributed insights.
>>
>> --
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>
>
>
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-- 
Mike A Schwab, Springfield IL USA
Where do Forest Rangers go to get away from it all?

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Re: Where do I find a list of world timezones in z/OS USS notation?

[Paul Gilmartin]

On Wed, 25 Apr 2018 09:02:10 -0400, Steve Smith wrote:

>What there should be is a world-wide ban on the lunacy of "daylight savings
>time".
> 
I think my energy would be more productively spent working for a world-wide
ban on the lunacy of nuclear weapons, or toward finding a cure for cancer.
Spending 30 seconds semiannualy to reset my watch is a lesser lunacy.

>On Wed, Apr 25, 2018 at 4:33 AM, Giliad Wilf wrote:
>
>> Seems there should have been a more generalized, better convention for
>> specifying back and forth daylight switching. Sigh.
>> 
https://en.wikipedia.org/wiki/Tz_database

Alas, not embraced by POSIX.  And it doesn't involve any "switching".  No
system control blocks need to be updated semiannualy.

Mainframers are peculiarly upset by this "lunacy" largely because they
refuse to accept a proven solution.  NIH.

-- gil

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Re: AW: Re: Where do I find a list of world timezones in z/OS USS notation?

[Carmen Vitullo]

I totally agree, but we can't even get this country, USA to agree on a BAN on 
DST, should have saved this discussion for Friday :) 





Carmen Vitullo 

- Original Message -

From: "Steve Smith"  
To: IBM-MAIN@LISTSERV.UA.EDU 
Sent: Wednesday, April 25, 2018 8:02:10 AM 
Subject: Re: AW: Re: Where do I find a list of world timezones in z/OS USS 
notation? 

What there should be is a world-wide ban on the lunacy of "daylight savings 
time". 

Yeah, I went there... knowing that this dead horse has been beaten to a 
puree, I should apologize for mentioning it. 


On Wed, Apr 25, 2018 at 4:33 AM, Giliad Wilf < 
00d50942efa9-dmarc-requ...@listserv.ua.edu> wrote: 

> ​... 
> 

> Seems there should have been a more generalized, better convention for 
> specifying back and forth daylight switching. Sigh. 
> 
> Many thanks to all who contributed insights. 
> 
> -- 
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> send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN 
> 



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Re: AW: Re: Where do I find a list of world timezones in z/OS USS notation?

[Steve Smith]

What there should be is a world-wide ban on the lunacy of "daylight savings
time".

Yeah, I went there... knowing that this dead horse has been beaten to a
puree, I should apologize for mentioning it.


On Wed, Apr 25, 2018 at 4:33 AM, Giliad Wilf <
00d50942efa9-dmarc-requ...@listserv.ua.edu> wrote:

> ​...
>

> Seems there should have been a more generalized, better convention for
> specifying back and forth daylight switching. Sigh.
>
> Many thanks to all who contributed insights.
>
> --
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> send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
>



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Re: AW: Re: Where do I find a list of world timezones in z/OS USS notation?

[Giliad Wilf]

On Wed, 25 Apr 2018 02:21:35 -0500, Norbert Friemel  wrote:

>On Tue, 24 Apr 2018 03:31:15 -0500, Giliad Wilf wrote:
>
>>
>>Here, IDT started Friday, March 23rd, 2am and will end Sunday, October 28th, 
>>2am, so, if I specify...
>>
>>IST-2IDT,M3.4.5,M10.5.0
>>
>
>M3.5.5 in 2019 (and 2024, 2030, ...) (5th Friday)
>
>Norbert Friemel
>

Right, thank you, this may have to be modified from time to time.
Seems there should have been a more generalized, better convention for 
specifying back and forth daylight switching. Sigh.
 
Many thanks to all who contributed insights.

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Re: AW: Re: Where do I find a list of world timezones in z/OS USS notation?

[Norbert Friemel]

On Tue, 24 Apr 2018 03:31:15 -0500, Giliad Wilf wrote:

>
>Here, IDT started Friday, March 23rd, 2am and will end Sunday, October 28th, 
>2am, so, if I specify...
>
>IST-2IDT,M3.4.5,M10.5.0
>

M3.5.5 in 2019 (and 2024, 2030, ...) (5th Friday)

Norbert Friemel

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Re: Where do I find a list of world timezones in z/OS USS notation?

[Norbert Friemel]

On Mon, 23 Apr 2018 07:21:09 -0500, John McKown wrote:

>
>​I also have the timezone in the LE parameters member of PARMLIB. I.e.
>CEEPRM00. LE has the concept of "environment variables" which is similar to
>UNIX. So I set the TZ variable for LE as well. I'm not sure if this is
>required or not. Example:
>

TZ and/or _TZ
https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.3.0/com.ibm.zos.v2r3.cbcpx01/custim.htm

Norbert Friemel

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Re: AW: Re: AW: Re: Where do I find a list of world timezones in z/OS USS notation?

[Norbert Friemel]

On Wed, 25 Apr 2018 08:35:31 +0200, Peter Hunkeler  wrote:

>...
>
>No, I was referring to below listed statement found in the description of TZ 
>in the z/OS UNIX Command Reference:
>...

>
>
>I will send an RCF, because the description in the named book does not mention 
>what happens when start/end of period is *not* specified.
>

https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.3.0/com.ibm.zos.v2r3.bpxa500/bpxa50065.htm
"Neither starttime nor endtime are required. If they are omitted, their values 
default to 02:00:00. If this daylight saving time rule is omitted altogether, 
the values in the rule default to the standard rules for American daylight 
saving time."

and

https://www.ibm.com/support/knowledgecenter/SSLTBW_2.3.0/com.ibm.zos.v2r3.cbcpx01/cbc1p2559.htm
"Neither starttime nor endtime are required, and when omitted, their values 
default to 02:00:00. If this daylight savings time rule is omitted altogether, 
the values in the rule default to the standard American daylight savings time 
rules starting at 02:00:00 the second Sunday in March and ending at 02:00:00 
the first Sunday in November."

Norbert Friemel

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AW: Re: AW: Re: Where do I find a list of world timezones in z/OS USS notation?

[Peter Hunkeler]

>>... and whether or not there is a text string *after* that numeric part. It 
>>is the trigger to activate the automatic daylight saving time handling. No 
>>string, no DST handling.

>Do you refer to the [[startdate[/starttime],enddate[/endtime]] optional 
>portion of the TZ specification at the below URL?




No, I was referring to below listed statement found in the description of TZ in 
the z/OS UNIX Command Reference:


TZ
...
[daylight]
The abbreviation for your local daylight saving time zone. If the daylight 
field is missing, the conversion to daylight saving time is disabled.


So, with TZ=MEZ-1, the date command (and other services returning time data) 
will *not* add one hour during the daylight saving period (end of March to end 
of October in Europe).


With TZ=MEZ-1MESZ, it will. However, without the additional information you 
referred to, it will assuem the period is according to US rules (I think). So, 
for Europe you will need both, the string (MESZ) and the start and end date of 
the DST period (M3.5.0,M10.5.0)


I will send an RCF, because the description in the named book does not mention 
what happens when start/end of period is *not* specified.




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Re: AW: Re: Where do I find a list of world timezones in z/OS USS notation?

[Paul Gilmartin]

On Tue, 24 Apr 2018 07:37:53 +0200, Peter Hunkeler wrote:

>>What is important is the numeric part.
>
>... and whether or not there is a text string *after* that numeric part. It is 
>the trigger to activate the automatic daylight saving time handling. No 
>string, no DST handling.
> 
Not entirely.  No string presumes USA conventions.  It depends in
part on which day of the week you attend services.

-- gil

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Re: Where do I find a list of world timezones in z/OS USS notation?

[Paul Gilmartin]

On Mon, 23 Apr 2018 13:19:11 +, Allan Staller wrote:

>Try setting:
>
> TZ= IST2IDT
>export $TZ
>
>in a Unix shell and see what happens.
> 
Close, but no cigar.  See:

https://en.wikipedia.org/wiki/Israel_Standard_Time#Differences_between_other_countries

The POSIX convention (used by z/OS) is America-centric.

Jewish solar-lunar calendar?

>-Original Message-
>From: Giliad Wilf
>Sent: Monday, April 23, 2018 3:42 AM
>
>I'm configuring a new system in Israel and wish to pick the correct timezone 
>for our location, in terms of z/OS USS.
>Now I wonder whether or not will IST2IDT be accepted by z/OS USS if placed in 
>'/etc/init.options' and '/etc/profile' files.
> 
>Are there any additional locations to update, aside from CLOCKxx's TIMEZONE 
>parameter, which I'm going to change from 'W.06.00.00' to 'E.02.00.00'?
>
>Our z/OS runs on top of z/VM and Linux zPDT app., which show both correct UTC 
>value, but use a TZ that appears to be the equivalent of EST5EDT.
> 
That's two places too many.

When I first encountered UNIX, it seemed to me that the "UNI" prefix might
mean "Uniform" (ignore historical and risqué wit.)  On my Linux and MacOS 
systems,
679 $ ls -l /etc/localtime
lrwxr-xr-x  1 root  wheel  34 Apr  8 09:20 /etc/localtime -> 
/usr/share/zoneinfo/America/Denver
... provides a useful default for any process in which TZ is unset.
Why is z/OS so moronic?  And why has z/OS not adopted Olson zoneinfo?

I have looked in vain for either a list of world timezones in POSIX format
or a utility to convert Olson to POSIX and found none.  It doesn't  seem
useful for the larger world that's more au courant than z/OS.

On Mon, 23 Apr 2018 12:31:28 +, Dyck, Lionel B. (TRA) wrote:

>His may help https://www.timeanddate.com/time/current-number-time-zones.html
>
Seriously!?  And that's a schema, not "a list" as the OP requested.

-- gil

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Re: Where do I find a list of world timezones in z/OS USS notation?

[Giliad Wilf]

BTW, John, when looking for possible "standard" names for timezones, I ran 
across the following page...
 
http://www.linuxhowtos.org/manpages/3/newtzset.htm
 
...that misled me to think there is such a list.
 
On the above page there is a specific example for Israel specifying IST2IDT (no 
minus sign), but then, this is a Linux "HowTo" site, not a z/OS one.

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Re: AW: Re: Where do I find a list of world timezones in z/OS USS notation?

[Giliad Wilf]

On Tue, 24 Apr 2018 07:37:53 +0200, Peter Hunkeler  wrote:

>>What is important is the numeric part.
>
>
>... and whether or not there is a text string *after* that numeric part. It is 
>the trigger to activate the automatic daylight saving time handling. No 
>string, no DST handling.
>
>
>--
>Peter Hunkeler
>

Do you refer to the [[startdate[/starttime],enddate[/endtime]] optional portion 
of the TZ specification at the below URL?
https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.3.0/com.ibm.zos.v2r3.bpxa500/bpxa50065.htm

Here, IDT started Friday, March 23rd, 2am and will end Sunday, October 28th, 
2am, so, if I specify...

IST-2IDT,M3.4.5,M10.5.0

...will this trigger automatic switchback?

Will this switchback be limited to the z/OS USS environment, or will this 
affect z/OS entirely?
I've never tried this, and think a "SET TIMEZONE=E.02.00" will be required as 
well. 
This needs be tested when the time for a switchback comes.

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Re: Where do I find a list of world timezones in z/OS USS notation?

[Peter Hunkeler]

​>I also have the timezone in the LE parameters member of PARMLIB. I.e. 
CEEPRM00. LE has the concept of "environment variables" which is similar to 
UNIX. So I set the TZ variable for LE as well. I'm not sure if this is 
required or not. 


Is it required? No. Is it useful? Absolutely! Without it, you would need to 
specify ENVAR('TZ=...') via EXEC PARM= in each and every job, STC, etc. where 
some UNIX code is running.


--
Peter Hunkeler

 




-- 
Peter Hunkeler 

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AW: Re: Where do I find a list of world timezones in z/OS USS notation?

[Peter Hunkeler]

>What is important is the numeric part.


... and whether or not there is a text string *after* that numeric part. It is 
the trigger to activate the automatic daylight saving time handling. No string, 
no DST handling.


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Re: Where do I find a list of world timezones in z/OS USS notation?

[John McKown]

On Mon, Apr 23, 2018 at 9:34 AM, Giliad Wilf <
00d50942efa9-dmarc-requ...@listserv.ua.edu> wrote:

> Thank you John,
>
> I thought there must exist a list with 'standard' timezone names, and that
> "IST" by itself meant UTC+2 to z/OS USS, as I've never fiddled with this
> parameter before.
>

​There likely is such a list. I am not aware of it and have seen cases
where there are duplicates (AMT -- Amazon, Brazil, Time and Armenia Time).

ref: https://en.wikipedia.org/wiki/List_of_time_zone_abbreviations​


​What is important is the numeric part. You can even be silly, if you like:

$ TZ=CST6CDT date
Mon Apr 23 09:40:16 CDT 2018
$ TZ=bubbles7bath date
Mon Apr 23 08:40:29 bath 2018
​



> I consider entering 'IST-2IDT' into CEEPRMxx's ENVAR parameters too.
>
> Thanks again
>
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-- 
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Mine are so old, they have osteoporosis.

Maranatha! <><
John McKown

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Re: Where do I find a list of world timezones in z/OS USS notation?

[Giliad Wilf]

Thank you John,

I thought there must exist a list with 'standard' timezone names, and that 
"IST" by itself meant UTC+2 to z/OS USS, as I've never fiddled with this 
parameter before.
I consider entering 'IST-2IDT' into CEEPRMxx's ENVAR parameters too. 
 
Thanks again

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Re: Where do I find a list of world timezones in z/OS USS notation?

[Allan Staller]

Try setting:

 TZ= IST2IDT
export $TZ

in a Unix shell and see what happens.

HTH,

-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf 
Of Giliad Wilf
Sent: Monday, April 23, 2018 3:42 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Where do I find a list of world timezones in z/OS USS notation?

Hi All,

I'm configuring a new system in Israel and wish to pick the correct timezone 
for our location, in terms of z/OS USS.

Our system has been built abroad using CST6CDT, and shipped to us in the form 
of some 32 dumped 3390-9 volume images.

Now I wonder whether or not will IST2IDT be accepted by z/OS USS if placed in 
'/etc/init.options' and '/etc/profile' files.

Are there any additional locations to update, aside from CLOCKxx's TIMEZONE 
parameter, which I'm going to change from 'W.06.00.00' to 'E.02.00.00'?

Our z/OS runs on top of z/VM and Linux zPDT app., which show both correct UTC 
value, but use a TZ that appears to be the equivalent of EST5EDT.

I'm not going to meddle with zPDT or with z/VM. Only with z/OS.

Any insight will be greatly appreciated.


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Re: [EXTERNAL] Re: Where do I find a list of world timezones in z/OS USS notation?

[Dyck, Lionel B. (TRA)]

His may help https://www.timeanddate.com/time/current-number-time-zones.html

--
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Mainframe Systems Programmer – RavenTek Solution Partners


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Re: Where do I find a list of world timezones in z/OS USS notation?

[John McKown]

On Mon, Apr 23, 2018 at 3:42 AM, Giliad Wilf <
00d50942efa9-dmarc-requ...@listserv.ua.edu> wrote:

> Hi All,
>
> I'm configuring a new system in Israel and wish to pick the correct
> timezone for our location, in terms of z/OS USS.
>

​
​Basically, here is the source for the answer:

https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.3.0/com.ibm.zos.v2r3.bpxa500/bpxa50065.htm
​


>
> Our system has been built abroad using CST6CDT, and shipped to us in the
> form of some 32 dumped 3390-9 volume images.
>
> Now I wonder whether or not will IST2IDT be accepted by z/OS USS if placed
> in '/etc/init.options' and '/etc/profile' files.
>

​Yes, but it is wrong. It should be IST-2IDT.​ The "-2" says "East". Use of
"2" say "West" -- somewhere in the Atlantic, I guess.



>
> Are there any additional locations to update, aside from CLOCKxx's
> TIMEZONE parameter, which I'm going to change from 'W.06.00.00' to
> 'E.02.00.00'?
>

​I also have the timezone in the LE parameters member of PARMLIB. I.e.
CEEPRM00. LE has the concept of "environment variables" which is similar to
UNIX. So I set the TZ variable for LE as well. I'm not sure if this is
required or not. Example:

/* NONCICS LE PARMS */
CEEDOPT(
  ALL31(OFF),
  STACK(,,BELOW)
  CBLQDA(OFF),
  COUNTRY(US),
  DEBUG,
  DYNDUMP(*USERID,DYNAMIC,NOTDUMP),
*  ENVAR('TZ=CST6CDT'),*
  LIBSTACK(8K,4K,FREE),
  STORAGE(NONE,NONE,NONE,8K)
 )
/* CICS LE PARMS */
CEECOPT(
  ALL31(OFF),
  STACK(,,BELOW),
  STORAGE(00,NONE,NONE,0K)
 )
/* 64 BIT GROUP */
CELQDOPT(
 )​


​So far, the above has a least not cause any problems.​



> Our z/OS runs on top of z/VM and Linux zPDT app., which show both correct
> UTC value, but use a TZ that appears to be the equivalent of EST5EDT.
>
> I'm not going to meddle with zPDT or with z/VM. Only with z/OS.
>
> Any insight will be greatly appreciated.
>


​Bottom line: you have an error. IST2IDT is for W.02.00.00 not "east". You
need TZ=IST-2IDT as an example below shows

 example UNIX shell transcript from z/OS 1.12

$
printenv TZ;date
CST6CDT
Mon Apr 23 07:05:29 CDT 2018
$
export TZ=IST-2IDT;printenv TZ;date
IST-2IDT
Mon Apr 23 15:05:55 IDT 2018
LIH1:TSH009:/home/tsh009$


​
So, in /etc/init.options, I think you need the line:

-e TZ=IST-2IDT

And somewhere in /etc/profile, a line like:

export TZ=IST-2IDT

Along with the changes mentioned in CLOCKnn, CEEPRMnn.

Shalom,

-- 
We all have skeletons in our closet.
Mine are so old, they have osteoporosis.

Maranatha! <><
John McKown

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