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Announcement: Microsoft Windows December 2010 Updates to Daylight Saving Time and Time Zones

Check out Microsoft Knowledge Base Article 2443685, “December 2010 cumulative time zone update for Windows operating systems”, which the Windows team just posted.  This is the December Daylight Saving Time and Time Zone (DST & TZ) Cumulative Update (CU), and the current KB/blog text focuses on the less common changes, such as adding the timezone for Magadan. 
 
The good folks in Windows (thanks, KC) provided some additional commentary and clarifications to the posts…

  1. Explaining that the Namibia DST support changes begin in 2011
  2. Listing other regions with dynamic support which get routine annual updates

The December 2010 DST Cumulative Update for Windows operating systems focuses on the following changes:

Magadan

  • A new timezone has been created for Magadan. The Magadan timezone has support for Daylight Saving Time, with 2011 DST running from March to October.
  • The existing timezone “(UTC +11:00) Magadan, Solomon Islands, New Caldonia” has been renamed “(UTC +11:00) Solomon Islands, New Caledonia”.   This is only a  displayname update – the rules for this timezone have not changed. As before, this timezone does not have DST support.
Namibia: The offset has been changed from UTC +2:00 to UTC +1:00. In addition, for 2011 and forward, the DST start date will occur in September, and the DST end date will occur in April.
Egypt :  the 2011 DST start date is set to occur in April and the DST end-date is set to occur in September. This is provided to address cases in which 2010 Fix-its for temporary DST changes were only partially applied.
In addition to these changes, the December DST CU contains 2011 adjusted DST start and end-dates for the following timezones:
·    Israel Standard Time
·    Morocco Standard Time
·    Pacific SA Standard Time
·    Samoa Standard Time
·    Syria Standard Time
For more information on these adjustments, refer to this Microsoft KnowledgeBase article: http://support.microsoft.com/kb/2443685 
The following blogs have been updated  – the KB updates are coming :

For more information about how daylight saving time changes may affect other Microsoft products, click the following article number to view the article in the Microsoft Knowledge Base: 914387  (http://support.microsoft.com/kb/914387/ ) How to configure daylight saving time for Microsoft Windows operating systems.

A holiday nod of thanks to the good folks across our company working on our effort to help manage time (particularly in daylight saving time and time zone changes) — documented and followed at http://www.microsoft.com/time and over at the blog at http://blogs.technet.com/dst2007 — and to the folks coordinating the efforts on our daylight saving time and time zone updates and releases for current products across the various product groups at Microsoft.  As noted, this is a tough job, to say the least.

Tags: Windows, Microsoft, Daylight Saving Time, Daylight Savings Time, RSS, DST; 18,600,000 (up a bunch from just six months ago); 18,800,000 (down ~2M)

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Of interest: Daylight Saving Time Issues with Alarms on Apple iPhones

As I noted earlier today, It’s Time To Fall Back An Hour in the US and Canada as Daylight Saving Time Ends This Sunday.

I know of several customers who use Apple iPhones in their Windows environments and of note is an issue in Apple’s iOS that impacted their European customers recently…

http://www.zdnet.com/blog/hardware/iphone-bug-leads-to-mass-european-sleep-in/10187

Apple notes this issue in their article on iOS 4.1: Repeating alarms may trigger incorrectly before or after DST change (http://support.apple.com/kb/TS3542):

Symptoms: In some regions, shortly before or after the daylight saving time (DST) change, repeating alarms created in the Clock app may work incorrectly.

Products Affected: iPod touch (4th generation), iPod touch (3rd generation), iPhone 3G, iPhone 4, iPhone 3GS, iPod touch (2nd generation)

Resolution: To resolve this behavior for existing alarms, set the repeat interval to Never. You will need to reset these alarms for each day you need them. After November 7th, 2010, you can set your alarms to repeat again.

Users of the iPhone and iOS should please note that there may also be a problem for systems over this coming weekend (thanks, Will) with the move to DST in North America: 

http://www.cnn.com/2010/TECH/mobile/11/05/apple.alarm.daylight.savings/index.html

Users who depend on the iPhone to wake them up should create one-time alarms specifically for Monday morning, said Apple spokeswoman Natalie Harrison.

"We suggest customers set nonrepeating alarms for now and reset after November 7 to resolve the issue," she told CNN.

Of course, good to know that “Later this month, Apple will release an updated version of its mobile software, iOS 4.2, which will permanently fix the problem, Harrison said.”

It’s not clear whether or not this update will be available prior to the upcoming "fall back".

 

Tags: Microsoft, Daylight Saving Time, Daylight Savings Time,DST:

References to DST on Bing: 15,400,000 (up several million items); 15,500,000; 2,890,000.

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It’s Time To Fall Back An Hour in the US and Canada: Daylight Saving Time Ends This Sunday

Microsoft Office Clip ArtYes, it’s that time again if you’ll pardon the pun, to fall back in much of the Northern Hemisphere.

Daylight saving time ends at 2:00AM local time on Sunday, November 7, 2010, in much of the U.S and Canada, except in parts of the countries (including Hawaii and Arizona). You can read more than you’ll ever want to know about DST here and on our official Microsoft Daylight Saving Time Help and Support Center at http://www.microsoft.com/time.

This year, DST in much of the US and Canada ends in accordance with the US Department of Energy’s Energy Policy Act of 2005 that was passed into law. DST will end later than it did prior to 2007, on the first Sunday of November (in 2010, November 7); more details on the new DST start and end times can be found here). This results in a new DST period that is approximately three to four weeks longer than in previous years.

The switch to daylight saving time also means the time zone suffix changes, now using Daylight Time: for example, Pacific Standard Time is now Pacific Daylight Time (aka PDT). The other time zones move to Mountain Daylight Time (MDT), Central Daylight Time (CDT), and Eastern Daylight Time (EDT).

As I noted in this article, Microsoft strongly recommends that DST and time zone updates be installed on all affected systems, devices and applications to ensure consistency with current DST rules and time zone settings worldwide. Customers should review the product updates available and posted on this site and at http://support.microsoft.com/gp/dst_prodlist for the latest and updated information of Microsoft products affected by daylight saving time.

Fox News offers this commentary on DST, for your viewing pleasure.

More info

of interest from Bing:

Tags: Microsoft, Daylight Saving Time, Daylight Savings Time,DST:

References to DST on Bing: 15,400,000 (up several million items); 15,500,000; 2,890,000.

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Samoa adopts daylight saving time in 2010, but why at midnite?

I read in the Samoa Observer, and in case you missed the original news, Samoa will implement daylight saving time this September… MC900189348[1]

"…in response to the need for national strategies to address the crises with fuel and food prices. This new and exciting change will come into force on Friday night Saturday morning 25th September 2010 adjusting clocks forward 12:00am (0000Hrs) to 1:00am (0100Hrs) readjusting it back one hour from 1:00am (0100Hrs) to 12:00am (0000Hrs) on Friday night Saturday morning 2nd April 2011.

"Enquiries on daylight saving can be made to the Fair Trading and Codex Division of the Ministry of Commerce, Industry and Labour on the 4th Floor of the Accident Compensation Commission (ACC House), Apia, or its Telephone 20441."

More details may be found here: http://www.sits.ws/Home/tabid/1306/mid/6724/newsid6724/175/Samoas-Daylight-Saving-Starts-in-September-2010/language/en-NZ/Default.aspx

I wonder: do we have an office in Samoa? (Answer: no, but I think our offices in New Zealand may work with the nation.)

My concern here is the midnite change.

Here’s my regular advice for governments: in support of these types of changes, we provide guidance and Microsoft’s Policy in Response to DST/TZ Requests. It’s important for countries and territories to work towards seamless transitions to new DST and time zones policies, providing ample advance notice (of a year or more) with published confirmation of planned changes.

In addition – and this is important – we suggest that entities considering moves to DST implement changes at the next clock tick after 01:59:59 rather than at 00:00:00. Making the change at midnight can impact daily scheduled system events that sometimes occur at 12:00 midnite, such as back ups, data pulls or other automated tasks.

Apparently, I need to send out a few more emails to our folks in Public Sector.

 

Tags: Microsoft, Daylight Saving Time, Daylight Savings Time, RSS,DST, Samoa

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Announcement: Microsoft Windows May 2010 Updates to Daylight Saving Time and Time Zones

Check out Microsoft Knowledge Base Article 981793, "May 2010 cumulative time zone update for Microsoft Windows operating systems", which the Windows team just posted. 

Changes / updates from the previous cumulative Windows time zone update include…

The following changes were made since the previous Windows cumulative time zone update:

  • Bangladesh Standard Time: Cancels DST.
  • Fiji Standard Time: DST change.
  • Kamchatka Standard Time: Deprecates this time zone.
  • Morocco Standard Time: DST change.
  • Pacific SA Standard Time: DST change for 2010.
  • Paraguay Standard Time:  DST change.
  • Syria Standard Time: Creates a new “(UTC+02:00) Damascus” time zone with DST for Syria.

A nod to the good folks across our company working on our effort to help manage time (particularly in daylight saving time and time zone changes) documented and followed at http://www.microsoft.com/time and over at the blog at http://blogs.technet.com/dst2007.  Thanks to the folks coordinating the efforts on our daylight saving time and time zone updates and releases for current products across the various product groups at Microsoft.  As noted, this is a tough job, to say the least.

For more information about how daylight saving time changes may affect other Microsoft products, click the following article number to view the article in the Microsoft Knowledge Base: 914387  (http://support.microsoft.com/kb/914387/ ) How to configure daylight saving time for Microsoft Windows operating systems

Tags: Windows, Microsoft, Daylight Saving Time, Daylight Savings Time, RSS,DST; 18,000,000 (up from 3M six months ago); 20,400,000 (up >3M)

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