Hi, A mapping between Android version and tzdata version would also be very handy, since there is no way to update the tzdata version, without upgrading Android version. Regards, Ken Rylander | Solution Development and BI Manager - Digicel Pacific | Digicel (Fiji) Ltd | P.O.Box 13811, Suva, Fiji | Ground Floor, Kadavu House, Victoria Parade, Suva, Fiji | Mobile (679) 701 5353 | Fax (679) 334 3733 | ken.rylander@digicelgroup.com<mailto:ken.rylander@digicelgroup.com> | www.digicelpacific.com<http://www.digicelpacific.com/> From: Deborah Goldsmith [mailto:goldsmit@apple.com] Sent: Wednesday, 28 October 2015 10:06 AM To: Matt Johnson <mj1856@hotmail.com> Cc: Time zone mailing list <tz@iana.org> Subject: Re: [tz] News article: Turkey’s plan to ignore daylight saving time has been foiled by smartphones Hi Matt, Thanks for the suggestion; I will pass it on. Thanks, Deborah On Oct 27, 2015, at 12:48 PM, Matt Johnson <mj1856@hotmail.com<mailto:mj1856@hotmail.com>> wrote: Thanks Deborah! Is theee any way you could get Apple to post this somewhere official? Preferably there would be a page somewhere with each OS version and corresponding tzdb version, that gets maintained. Thanks, Matt ________________________________ From: Deborah Goldsmith<mailto:goldsmit@apple.com> Sent: ‎10/‎27/‎2015 12:40 PM To: Paul Eggert<mailto:eggert@CS.UCLA.EDU> Cc: Time zone mailing list<mailto:tz@iana.org> Subject: Re: [tz] News article: Turkey’s plan to ignore daylight saving time has been foiled by smartphones FWIW, 2015g was included in iOS 9.1, watchOS 2.0.1, and OS X 10.11.1. Deborah

On Oct 27, 2015, at 10:19 AM, Paul Eggert <eggert@CS.UCLA.EDU<mailto:eggert@cs.ucla.edu>> wrote:

Paul_Koning@dell.com<mailto:Paul_Koning@dell.com> wrote:

...

Clearly it isn't sufficient for governments to announce this sort of thing with just 3 or 4 weeks lead time.

It's not just computers. The Diyanet (the Presidency of Religious Affairs) warned that preprinted calendars contain Muslim prayer times that are now incorrect, and asked the faithful to manually add an hour. <http://www.dailysabah.com/nation/2015/10/25/turkey-to-end-daylight-savings-t...>.

My cell phone (running Android 6.0 Marshmallow, released 2015-10-05) still has the old rules for Asia/Istanbul. My work desktop (Fedora 21) and my home desktop (Ubuntu 15.10) do have the current rules. Other operating system distributions that are up to date include Arch Linux <https://www.archlinux.org/packages/core/any/tzdata/>, CentOS <https://lists.centos.org/pipermail/centos-announce/2015-October/021425.html>, Debian <https://packages.debian.org/sid/tzdata>, Linux From Scratch <http://wiki.linuxfromscratch.org/lfs/ticket/3845>, Oracle Linux <https://oss.oracle.com/pipermail/el-errata/2015-October/005451.html>, Red Hat Enterprise Linux <https://rhn.redhat.com/errata/RHEA-2015-1863.html>, and Scientific Linux <http://ftp.scientificlinux.org/linux/scientific/7.1/x86_64/updates/fastbugs/...>. Apologies if I missed your favorite OS distribution and if it is up to date. Obviously many operating systems are not yet updated, though; it's not just Android.

This weekend's confusion probably deserves a comment, which the attached proposed patch adds. <0001-europe-Add-comment-re-EEST-in-Turkey.patch>

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Hi, Well, yes and no. As a software developer, who is comfortable in compiling timezone files for Android, you could probably make it work. I think you have to root your Android device though, otherwise the files are read-only (if I remember correctly, it's been a while since I tried). So it's far from an officially sanctioned method. Pre-Android 4.3 the tzdata files was in a familiar format, but from 4.3 Android, devices have only 3 files in the tz directory (/system/usr/share/zoneinfo/): zoneinfo.dat zoneinfo.idx zoneinfo.version It's pretty easy to find the Java code to compile and produce these three files. An additional complication (from version 4.4) is that some timezone info is kept in the ICU, and compiling the ICU libraries for older Android versions (e.g. 4.4-5), is far from trivial. More info about the ICU/tz issue: https://code.google.com/p/android/issues/detail?id=169960 http://stackoverflow.com/questions/33439071/update-android-timezone-data But it's probably not an update procedure that your average-Joe would attempt... Regards, Ken Rylander | Solution Development and BI Manager - Digicel Pacific | Digicel (Fiji) Ltd | P.O.Box 13811, Suva, Fiji | Ground Floor, Kadavu House, Victoria Parade, Suva, Fiji | Mobile (679) 701 5353 | Fax (679) 334 3733 | ken.rylander@digicelgroup.com | www.digicelpacific.com -----Original Message----- From: Paul_Koning@Dell.com [mailto:Paul_Koning@Dell.com] Sent: Sunday, 1 November 2015 1:36 AM To: Ken Rylander <Ken.Rylander@digicelgroup.com> Cc: goldsmit@apple.com; mj1856@hotmail.com; enh@google.com; tz@iana.org Subject: Re: [tz] News article: Turkey’s plan to ignore daylight saving time has been foiled by smartphones

On Oct 27, 2015, at 8:15 PM, Ken Rylander <Ken.Rylander@digicelgroup.com> wrote:

Hi,

A mapping between Android version and tzdata version would also be very handy, since there is no way to update the tzdata version, without upgrading Android version.

Why not? It's just files. It may be that most vendors don't issue interim upgrades of the tzdata separate from the OS, but clearly they could if they wanted to. paul ________________________________ Notice of Confidentiality: The information contained in this communication is intended solely for the use of the individual or entity to whom it is addressed and others authorized to receive it. It may contain confidential or legally privileged information. If you are not the intended recipient you are hereby notified that any disclosure, copying, distribution or taking any action in reliance on the contents of this information is strictly prohibited and may be unlawful. If you have received this communication in error, please notify us immediately by responding to this email and then delete it from your system.

Hi, Yep, agreed. Then we're on the same page. Regards, Ken Rylander | Solution Development and BI Manager - Digicel Pacific | Digicel (Fiji) Ltd | P.O.Box 13811, Suva, Fiji | Ground Floor, Kadavu House, Victoria Parade, Suva, Fiji | Mobile (679) 701 5353 | Fax (679) 334 3733 | ken.rylander@digicelgroup.com | www.digicelpacific.com -----Original Message----- From: Paul_Koning@Dell.com [mailto:Paul_Koning@Dell.com] Sent: Tuesday, 3 November 2015 4:22 AM To: Ken Rylander <Ken.Rylander@digicelgroup.com> Cc: goldsmit@apple.com; mj1856@hotmail.com; enh@google.com; tz@iana.org Subject: Re: [tz] News article: Turkey’s plan to ignore daylight saving time has been foiled by smartphones

On Nov 1, 2015, at 3:51 PM, Ken Rylander <Ken.Rylander@digicelgroup.com> wrote:

Hi,

Well, yes and no. As a software developer, who is comfortable in compiling timezone files for Android, you could probably make it work....

Ok. I meant something different, though. Given that you can do this as a developer, it follows that the vendors who distribute their various versions of Android could distribute updates that touch just the tz data, not the core OS. They aren't forced to wait for a new core OS update from Google. It's no different from, say, a patch release for a security fix. In other words, the fact that some Android products aren't up to date as far as tzdata is concerned is a vendor choice, not an OS limitation. paul

...

A mapping between Android version and tzdata version would also be very handy, since there is no way to update the tzdata version, without upgrading Android version.

Why not? It's just files. It may be that most vendors don't issue interim upgrades of the tzdata separate from the OS, but clearly they could if they wanted to.

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