Updating Windows Mobile phones for Daylight Saving TimeUpdated March 27, 2008
Daylight Saving Time (DST) or Summer Time, the shifting of clocks by one hour, is not observed uniformly around the world. Some countries and territories follow a set of standard rules for the start and end dates of Daylight Saving Time, and others follow their own calendars.
A March 2008 DST update for Microsoft Windows Mobile-based devices changes the time zone data to accommodate DST changes in several countries. You can find information about exact dates and the potential impact to your time zones in the Changes in Windows Mobile Daylight Saving Time section. |
| Update your device | Your device stores the predefined DST dates in a table in its memory. Changes in DST will cause the following problems for Windows Mobile devices in the affected time zones unless the update is applied: | The device has outdated DST rules and will not honor the new DST transition time. The clock reads one hour off actual time during the new DST period. Calendar items are displayed one hour off actual time during the new DST period.
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| To make sure that the clock and appointments on your Windows Mobile devices are accurate, you'll need to update your device. If you regularly synchronize your device with your PC, you'll need to update Microsoft Windows and Microsoft Outlook as well.
Note: All users in affected time zones should immediately install these updates. Users in other countries should install these updates if they travel to these countries or if they make calendar appointments that include attendees who are based in these countries. |
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| First make sure your PC is up to date (see http://support.microsoft.com/gp/cp_dst for more details) Note: Make sure you update all PCs that you may use to connect to your Windows Mobile device. This will update the time zone definitions on your PC. For Windows XP SP2, Windows Vista, and Windows Server 2003, the update has already been deployed and installed if you have Automatic Updates enabled. To verify that it is installed, you can visit Windows Update and make sure that all High Priority items are installed. For all products not currently in mainstream support, see KB 914387 for steps on manually updating your PC.
If you use Microsoft Outlook to synchronize your calendar, download and run the Outlook Time Zone Update Tool. If you do not use Microsoft Outlook, go to step 4. Check to make sure you have the latest version of ActiveSync or Windows Mobile Device Center: ActiveSync 4.5 or Windows Mobile Device Center 6.1. Connect your Windows Mobile device to your PC, and then download and run the Daylight Saving Time Update Tool for Windows Mobile.
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| For users that do not connect to PCs, there is an update file (.CAB) available to make this update. (Note: There are a number of ways to install a .CAB file and below outlines a popular method). Also, Microsoft Exchange users should contact your system administrator to make sure your Exchange Server has been updated as well. | Using the Microsoft Internet Explorer Mobile browser on your device, go to http://www.microsoft.com/windowsmobile/ and download the Daylight Saving Time Update to your Windows Mobile device. This file will install the update directly on the device. On your device, navigate to the file you downloaded, and then tap it (or select the file and press “OK” button on a non-touch screen device) to install the update. If you are unable to download the link proceed to step 2. If you are unable to access the link in step 1 on your device, open Windows Internet Explorer on your PC and click here to start the download process. After downloading the file, attach it to an e-mail and send it to an account you can access on your device. On your device, open the e-mail and save the attached file; on some devices, you may need to synchronize your e-mail a second time to download the attached file. Then navigate to the file on your device and click on it to install the update. Note: After you install this update, your device will automatically restart to ensure that the update is complete.
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| All connected devices must be updated
Even if you correctly update your PC with the DST update, when you view your calendar from a non-updated mobile device running Windows Mobile, your meetings during the extended DST period will be shifted by one hour. Meetings created on your non-updated device will need to be updated on your PC by running the Outlook Time Zone Update Tool again. If some users have not updated their Outlook, it will affect other users
The Outlook Time Zone Update Tool only updates meetings for which the user is the organizer, and then automatically sends updates for those meetings to attendees. Meetings that you are invited to but did not organize will not be updated until the organizer updates the meeting and sends you an update. Once the update is accepted, it will display at the proper time. Additionally, meetings created by a delegate on your behalf from a non-updated PC will need to be updated on your PC by running the Outlook Time Zone Update Tool again.
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What you can do to ease the transition |
| All Windows Mobile users affected by the time change should give extra attention to meetings and appointments scheduled during the extended DST periods. View any appointments that fall into these date ranges as suspect until you communicate with all meeting invitees to make sure that the item shows up correctly on everyone's calendar. | Include the time of the meeting in the e-mail request so that invitees can double check the correct meeting time. Example: "Project brainstorming - 11:00 a.m. Central Time." When in doubt, verify the correct time with the organizer. Before you apply the DST updates, print out your weekly calendars for the affected time periods so that you can keep track of which meetings were scheduled before and after you run the tool.
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Changes in Windows Mobile Daylight Saving Time | |
| New DST changes for March 2008 | Change in Daylight Saving Time:
| Arabic Standard Time |
(GMT +3:00) Baghdad |
Not observed |
Not observed |
| AUS Eastern Standard Time |
(GMT +10:00) Sydney |
First Sunday in October at 02:00:00 |
First Sunday in April at 03:00:00 |
| Cen. Australia Standard Time |
(GMT +9:30) Adelaide |
First Sunday in October at 02:00:00 |
First Sunday in April at 03:00:00 |
| Tasmania Standard Time |
(GMT +10:00) Hobart |
First Sunday in October at 02:00:00 |
First Sunday in April at 03:00:00 |
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| Previous DST changes also included | Change in Daylight Saving Time:
| Alaska Standard Time |
(GMT-09:00) Alaska |
Second Sunday in March at 02:00:00 |
First Sunday in November at 02:00:00 |
| Atlantic Standard Time |
(GMT-04:00) Atlantic Time (Canada) |
Second Sunday in March at 02:00:00 |
First Sunday in November at 02:00:00 |
| Central Standard Time |
(GMT-06:00) Central Time (US & Canada) |
Second Sunday in March at 02:00:00 |
First Sunday in November at 02:00:00 |
| Central Standard Time (Mexico) |
(GMT-06:00) Guadalajara, Mexico City, Monterrey |
First Sunday in April at 02:00:00 |
Last Sunday in October at 02:00:00 |
| Eastern Standard Time |
(GMT-05:00) Eastern Time (US and Canada) |
Second Sunday in March at 02:00:00 |
First Sunday in November at 02:00:00 |
| Mountain Standard Time |
(GMT-07:00) Mountain Time (US and Canada) |
Second Sunday in March at 02:00:00 |
First Sunday in November at 02:00:00 |
| Mountain Standard Time (Mexico) |
(GMT-07:00) Chihuahua, La Paz, Mazatlan |
First Sunday in April at 02:00:00 |
Last Sunday in October at 02:00:00 |
| New Zealand Standard Time |
(GMT+12:00) Auckland, Wellington |
Last Sunday in September at 02:00:00 |
First Sunday in April at 03:00:00 |
| Newfoundland Standard Time |
(GMT-3:30) Newfoundland |
Second Sunday in March at 00:01:00 |
First Sunday in November at 00:01:00 |
| Pacific Standard Time |
(GMT-08:00) Pacific Time (US & Canada) |
Second Sunday in March at 02:00:00 |
First Sunday in November at 02:00:00 |
| Pacific Standard Time (Mexico) |
(GMT-08:00) Tijuana, Baja California |
First Sunday in April at 02:00:00 |
Last Sunday in October at 02:00:00 |
| W. Australia Standard Time |
(GMT+08:00) Perth |
Last Sunday in October at 02:00:00 |
Last Sunday in March at 03:00:00 |
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| Q. The update fails on my device A. This error is rare, and can be fixed by restarting your device. Restarting usually means turning off your device and turning it back on (also sometimes called soft reset). Please refer to your device's user manual for accurate instructions on how to turn the device off and then on again.
Q. I get an error message that says “Error processing time zone, please manually set the time zone” A. This error is rare, and can be fixed by restarting your device. Restarting usually means turning off your device and turning it back on. Please refer to your device's user manual for accurate instructions on how to turn the device off and then on again.
Q. I get an error message about an unsigned file A. The installer will only work with devices that contain the Mobile2Market certificate. This certificate is installed on almost every Windows Mobile device ever released; this error is not expected on U.S. devices. If your device rejects the update and shows you a security error, it does not have the required certificate. In this case you will have to wait for your mobile operator to issue this update signed with their own certificate. You should contact your Mobile Operator immediately.
Q. How do I know if I need to update my device? A. You should update your Windows Mobile Pocket PC or smartphone if it uses one of the following operating systems: Windows Mobile 5.0 Windows Mobile 6
To see the operating system on a smartphone, click Start > Settings > More > About. On a Pocket PC, tap Start > Settings > System tab > About.
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| Q. What if my device operating system is not supported or DST is observed in my country but is not listed in the Changes in Windows Mobile Daylight Saving Time section? A. In this case you should contact your Mobile Operator for more information.
Q. What if my device locks up during the installation?
A. This may occur on some devices, and you should restart the device. Restarting usually means turning off your device and turning it back on. Please refer to your device's user manual for accurate instructions on how to turn the device off and then on again.
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| Q. How can I determine how my device synchronizes with Outlook? A. If you are not sure which set of instructions to follow, open Microsoft ActiveSync on your device. The ActiveSync screen will display either Exchange Server and/or Windows PC, along with the last date of synchronization. If the most recent synchronization is with Windows PC, follow the instructions “For Windows Mobile users who connect to a PC to synchronize.” If the most recent synchronization is with Exchange Server, follow the instructions “For Windows Mobile users who connect their device to Microsoft Exchange Server.”
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| | | | Q. How are people in countries outside of the impacted time zones affected? A. All users in affected time zones should immediately install these updates. Users in other countries should install these updates if they travel to these countries or if they make calendar appointments that include attendees that are based in these countries.
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