Wrong timezone offset. How do I correct it? (help with zic timezone compiler)

up vote
7
down vote

favorite

I have an iPod touch (2nd gen) and constant troubles with the clock setting itself one hour ahead of the actual time when I connect it to the computer.

long story short, When I SSH into the device:

date "+%Z" returns ARST which is correct (I'm in Buenos Aires, Argentina)

date "+%z" the result is -0200, which is wrong and should be -0300

My question is: How do I correct the offset of my timezone to the real value?

I have found mentions of zic, zdump and references to a "IANA Time Zone Database".

I've tried to find allready compiled files in order to replace the whole "zoneinfo" folder, but the downloads I could find seem to use a different folder structure than the one on the iPod.

edit: I am looking for a way to edit or update the timezone information, so that my timezone "ARST" is configured correctly. I have found several references to a compiler named zic.

Both zic and zdump are present on the device, which leads me to believe it can be done via SSH and UNIX-commands.

edited Nov 17 at 20:34

Rui F Ribeiro

38.2k1475123

asked Jan 26 '13 at 0:09

leugim

20619

add a comment |

up vote
7
down vote

favorite

I have an iPod touch (2nd gen) and constant troubles with the clock setting itself one hour ahead of the actual time when I connect it to the computer.

long story short, When I SSH into the device:

date "+%Z" returns ARST which is correct (I'm in Buenos Aires, Argentina)

date "+%z" the result is -0200, which is wrong and should be -0300

My question is: How do I correct the offset of my timezone to the real value?

edited Nov 17 at 20:34

Rui F Ribeiro

38.2k1475123

asked Jan 26 '13 at 0:09

leugim

20619

add a comment |

up vote
7
down vote

favorite

I have an iPod touch (2nd gen) and constant troubles with the clock setting itself one hour ahead of the actual time when I connect it to the computer.

long story short, When I SSH into the device:

date "+%Z" returns ARST which is correct (I'm in Buenos Aires, Argentina)

date "+%z" the result is -0200, which is wrong and should be -0300

My question is: How do I correct the offset of my timezone to the real value?

edited Nov 17 at 20:34

Rui F Ribeiro

38.2k1475123

asked Jan 26 '13 at 0:09

leugim

20619

I have an iPod touch (2nd gen) and constant troubles with the clock setting itself one hour ahead of the actual time when I connect it to the computer.

long story short, When I SSH into the device:

date "+%Z" returns ARST which is correct (I'm in Buenos Aires, Argentina)

date "+%z" the result is -0200, which is wrong and should be -0300

My question is: How do I correct the offset of my timezone to the real value?

timezone ios

edited Nov 17 at 20:34

Rui F Ribeiro

38.2k1475123

asked Jan 26 '13 at 0:09

leugim

20619

edited Nov 17 at 20:34

Rui F Ribeiro

38.2k1475123

asked Jan 26 '13 at 0:09

leugim

20619

edited Nov 17 at 20:34

Rui F Ribeiro

38.2k1475123

edited Nov 17 at 20:34

Rui F Ribeiro

38.2k1475123

edited Nov 17 at 20:34

Rui F Ribeiro

38.2k1475123

asked Jan 26 '13 at 0:09

leugim

20619

asked Jan 26 '13 at 0:09

leugim

20619

asked Jan 26 '13 at 0:09

leugim

20619

add a comment |

1 Answer
1

active

oldest

votes

up vote
7
down vote

accepted

OK,
I have stumbled upon the solution.

Here's the link where I got the info from: http://brickybox.com/2009/10/18/os-x-fix-argentina-dst-october-2009

The tzdata source has changed its url. It is now to be found at: ftp://ftp.iana.org/tz/ or http://www.iana.org/time-zones for more information.

I downloaded the updated tzdata-file: in this case
tzdata2012j.tar.gz and extracted it to a temporary folder.

Then I SSHed into the iPod and copied the extracted files to the
iPod. I chose User/Downloads and created a new (temporary) folder tzfix into which I copied everything.

after that came the zic compile: zic southamerica, which took a
few short seconds

then

cp /usr/share/zoneinfo/America/Argentina/Buenos_Aires /usr/share/zoneinfo/America/Buenos_Aires

I don't understand what this realy does. Copy, and overwrite, the file with itself?

testing date "+%z" and date "+%Z" both return correct values, now: -0300 and ART

Finally! I can set the clock to the correct time without twitter refusing to login and Google authenticator throwing wrong auth codes.

answered Jan 28 '13 at 4:34

leugim

20619

1

Step 4 copies the America/Argentina/Buenos_Aires file into the America/ directory. (Notice that it's not America/Argentina/.)
– a CVn
Jan 28 '13 at 8:41

Ah! Thanks @MichaelKjörling That clears it up nicely. It completely escaped my attention.
– leugim
Jan 28 '13 at 16:02

Aren't there updated packages available for iOS? That is preferrable to hacking in a file from sources.
– vonbrand
Jan 28 '13 at 16:09

@vonbrand: That was my first approach, searching for a solution. I couldn't find any updated packages. The only options seems to be "update to the newest iOS". My iPod won't perform well with iOS4, so I'm stuck with 3.1.3. I did not find a way to update only certain packages. Something I am learning to appreciate from fooling around with Ubuntu.
– leugim
Jan 28 '13 at 19:34

Also, and I did not include it in the answer because I suspect it to be offtopic, there is another separate database for the time which needs to be updated: the ICU database. It uses the same tzdata and needs to be compiled into /usr/share/icu/icudt40l.dat. This is necessary so that the clock and calendar apps show the correct time.
– leugim
Jan 28 '13 at 19:34

add a comment |

Your Answer

StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "106"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);

);

draft saved

draft discarded

StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f62617%2fwrong-timezone-offset-how-do-i-correct-it-help-with-zic-timezone-compiler%23new-answer', 'question_page');

);

Post as a guest

Name

Required, but never shown

1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

up vote
7
down vote

accepted

OK,
I have stumbled upon the solution.

Here's the link where I got the info from: http://brickybox.com/2009/10/18/os-x-fix-argentina-dst-october-2009

The tzdata source has changed its url. It is now to be found at: ftp://ftp.iana.org/tz/ or http://www.iana.org/time-zones for more information.

I downloaded the updated tzdata-file: in this case
tzdata2012j.tar.gz and extracted it to a temporary folder.

Then I SSHed into the iPod and copied the extracted files to the
iPod. I chose User/Downloads and created a new (temporary) folder tzfix into which I copied everything.

after that came the zic compile: zic southamerica, which took a
few short seconds

then

cp /usr/share/zoneinfo/America/Argentina/Buenos_Aires /usr/share/zoneinfo/America/Buenos_Aires

I don't understand what this realy does. Copy, and overwrite, the file with itself?

testing date "+%z" and date "+%Z" both return correct values, now: -0300 and ART

Finally! I can set the clock to the correct time without twitter refusing to login and Google authenticator throwing wrong auth codes.

answered Jan 28 '13 at 4:34

leugim

20619

1

Step 4 copies the America/Argentina/Buenos_Aires file into the America/ directory. (Notice that it's not America/Argentina/.)
– a CVn
Jan 28 '13 at 8:41

Ah! Thanks @MichaelKjörling That clears it up nicely. It completely escaped my attention.
– leugim
Jan 28 '13 at 16:02

Aren't there updated packages available for iOS? That is preferrable to hacking in a file from sources.
– vonbrand
Jan 28 '13 at 16:09

@vonbrand: That was my first approach, searching for a solution. I couldn't find any updated packages. The only options seems to be "update to the newest iOS". My iPod won't perform well with iOS4, so I'm stuck with 3.1.3. I did not find a way to update only certain packages. Something I am learning to appreciate from fooling around with Ubuntu.
– leugim
Jan 28 '13 at 19:34

Also, and I did not include it in the answer because I suspect it to be offtopic, there is another separate database for the time which needs to be updated: the ICU database. It uses the same tzdata and needs to be compiled into /usr/share/icu/icudt40l.dat. This is necessary so that the clock and calendar apps show the correct time.
– leugim
Jan 28 '13 at 19:34

add a comment |

up vote
7
down vote

accepted

OK,
I have stumbled upon the solution.

Here's the link where I got the info from: http://brickybox.com/2009/10/18/os-x-fix-argentina-dst-october-2009

The tzdata source has changed its url. It is now to be found at: ftp://ftp.iana.org/tz/ or http://www.iana.org/time-zones for more information.

I downloaded the updated tzdata-file: in this case
tzdata2012j.tar.gz and extracted it to a temporary folder.

Then I SSHed into the iPod and copied the extracted files to the
iPod. I chose User/Downloads and created a new (temporary) folder tzfix into which I copied everything.

after that came the zic compile: zic southamerica, which took a
few short seconds

then

cp /usr/share/zoneinfo/America/Argentina/Buenos_Aires /usr/share/zoneinfo/America/Buenos_Aires

I don't understand what this realy does. Copy, and overwrite, the file with itself?

testing date "+%z" and date "+%Z" both return correct values, now: -0300 and ART

Finally! I can set the clock to the correct time without twitter refusing to login and Google authenticator throwing wrong auth codes.

answered Jan 28 '13 at 4:34

leugim

20619

1

Step 4 copies the America/Argentina/Buenos_Aires file into the America/ directory. (Notice that it's not America/Argentina/.)
– a CVn
Jan 28 '13 at 8:41

Ah! Thanks @MichaelKjörling That clears it up nicely. It completely escaped my attention.
– leugim
Jan 28 '13 at 16:02

Aren't there updated packages available for iOS? That is preferrable to hacking in a file from sources.
– vonbrand
Jan 28 '13 at 16:09

@vonbrand: That was my first approach, searching for a solution. I couldn't find any updated packages. The only options seems to be "update to the newest iOS". My iPod won't perform well with iOS4, so I'm stuck with 3.1.3. I did not find a way to update only certain packages. Something I am learning to appreciate from fooling around with Ubuntu.
– leugim
Jan 28 '13 at 19:34

Also, and I did not include it in the answer because I suspect it to be offtopic, there is another separate database for the time which needs to be updated: the ICU database. It uses the same tzdata and needs to be compiled into /usr/share/icu/icudt40l.dat. This is necessary so that the clock and calendar apps show the correct time.
– leugim
Jan 28 '13 at 19:34

add a comment |

up vote
7
down vote

accepted

OK,
I have stumbled upon the solution.

Here's the link where I got the info from: http://brickybox.com/2009/10/18/os-x-fix-argentina-dst-october-2009

The tzdata source has changed its url. It is now to be found at: ftp://ftp.iana.org/tz/ or http://www.iana.org/time-zones for more information.

I downloaded the updated tzdata-file: in this case
tzdata2012j.tar.gz and extracted it to a temporary folder.

Then I SSHed into the iPod and copied the extracted files to the
iPod. I chose User/Downloads and created a new (temporary) folder tzfix into which I copied everything.

after that came the zic compile: zic southamerica, which took a
few short seconds

then

cp /usr/share/zoneinfo/America/Argentina/Buenos_Aires /usr/share/zoneinfo/America/Buenos_Aires

I don't understand what this realy does. Copy, and overwrite, the file with itself?

testing date "+%z" and date "+%Z" both return correct values, now: -0300 and ART

Finally! I can set the clock to the correct time without twitter refusing to login and Google authenticator throwing wrong auth codes.

answered Jan 28 '13 at 4:34

leugim

20619

OK,
I have stumbled upon the solution.

Here's the link where I got the info from: http://brickybox.com/2009/10/18/os-x-fix-argentina-dst-october-2009

The tzdata source has changed its url. It is now to be found at: ftp://ftp.iana.org/tz/ or http://www.iana.org/time-zones for more information.

I downloaded the updated tzdata-file: in this case
tzdata2012j.tar.gz and extracted it to a temporary folder.

Then I SSHed into the iPod and copied the extracted files to the
iPod. I chose User/Downloads and created a new (temporary) folder tzfix into which I copied everything.

after that came the zic compile: zic southamerica, which took a
few short seconds

then

cp /usr/share/zoneinfo/America/Argentina/Buenos_Aires /usr/share/zoneinfo/America/Buenos_Aires

I don't understand what this realy does. Copy, and overwrite, the file with itself?

testing date "+%z" and date "+%Z" both return correct values, now: -0300 and ART

Finally! I can set the clock to the correct time without twitter refusing to login and Google authenticator throwing wrong auth codes.

answered Jan 28 '13 at 4:34

leugim

20619

answered Jan 28 '13 at 4:34

leugim

20619

answered Jan 28 '13 at 4:34

leugim

20619

answered Jan 28 '13 at 4:34

leugim

20619

1

Step 4 copies the America/Argentina/Buenos_Aires file into the America/ directory. (Notice that it's not America/Argentina/.)
– a CVn
Jan 28 '13 at 8:41

Ah! Thanks @MichaelKjörling That clears it up nicely. It completely escaped my attention.
– leugim
Jan 28 '13 at 16:02

Aren't there updated packages available for iOS? That is preferrable to hacking in a file from sources.
– vonbrand
Jan 28 '13 at 16:09

@vonbrand: That was my first approach, searching for a solution. I couldn't find any updated packages. The only options seems to be "update to the newest iOS". My iPod won't perform well with iOS4, so I'm stuck with 3.1.3. I did not find a way to update only certain packages. Something I am learning to appreciate from fooling around with Ubuntu.
– leugim
Jan 28 '13 at 19:34

Also, and I did not include it in the answer because I suspect it to be offtopic, there is another separate database for the time which needs to be updated: the ICU database. It uses the same tzdata and needs to be compiled into /usr/share/icu/icudt40l.dat. This is necessary so that the clock and calendar apps show the correct time.
– leugim
Jan 28 '13 at 19:34

add a comment |

1

Step 4 copies the America/Argentina/Buenos_Aires file into the America/ directory. (Notice that it's not America/Argentina/.)
– a CVn
Jan 28 '13 at 8:41

Ah! Thanks @MichaelKjörling That clears it up nicely. It completely escaped my attention.
– leugim
Jan 28 '13 at 16:02

Aren't there updated packages available for iOS? That is preferrable to hacking in a file from sources.
– vonbrand
Jan 28 '13 at 16:09

@vonbrand: That was my first approach, searching for a solution. I couldn't find any updated packages. The only options seems to be "update to the newest iOS". My iPod won't perform well with iOS4, so I'm stuck with 3.1.3. I did not find a way to update only certain packages. Something I am learning to appreciate from fooling around with Ubuntu.
– leugim
Jan 28 '13 at 19:34

Also, and I did not include it in the answer because I suspect it to be offtopic, there is another separate database for the time which needs to be updated: the ICU database. It uses the same tzdata and needs to be compiled into /usr/share/icu/icudt40l.dat. This is necessary so that the clock and calendar apps show the correct time.
– leugim
Jan 28 '13 at 19:34

Step 4 copies the America/Argentina/Buenos_Aires file into the America/ directory. (Notice that it's not America/Argentina/.)
– a CVn
Jan 28 '13 at 8:41

Ah! Thanks @MichaelKjörling That clears it up nicely. It completely escaped my attention.
– leugim
Jan 28 '13 at 16:02

Aren't there updated packages available for iOS? That is preferrable to hacking in a file from sources.
– vonbrand
Jan 28 '13 at 16:09

@vonbrand: That was my first approach, searching for a solution. I couldn't find any updated packages. The only options seems to be "update to the newest iOS". My iPod won't perform well with iOS4, so I'm stuck with 3.1.3. I did not find a way to update only certain packages. Something I am learning to appreciate from fooling around with Ubuntu.
– leugim
Jan 28 '13 at 19:34

Also, and I did not include it in the answer because I suspect it to be offtopic, there is another separate database for the time which needs to be updated: the ICU database. It uses the same tzdata and needs to be compiled into /usr/share/icu/icudt40l.dat. This is necessary so that the clock and calendar apps show the correct time.
– leugim
Jan 28 '13 at 19:34

add a comment |

draft saved

draft discarded

draft saved

draft discarded

Post as a guest

Name

Required, but never shown

Name

Required, but never shown

Name

Required, but never shown

搜尋此網誌

mjhjmtu