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Daylight Saving Time Change 2007
 Technical Guide for Daylight Savings Time 2007 
Configuring Wyse Thin OS DST settings in ICA and RDP sessions
Starting this year, Daylight Saving Time (DST) will be observed from the second Sunday in March to the first Sunday in November. This change will add about a month of daylight saving time.
Why?
In August of 2005, the United States Congress passed the Energy Policy Act, which changes the dates of both the start and end of daylight saving time. When this law goes into effect in 2007, DST will start three weeks earlier (2:00 A.M. on the second Sunday in March) and will end one week later (2:00 A.M. on the first Sunday in November) than what had traditionally occurred.
What does this mean to me?
Thin clients are different from traditional PCs because they rely on the server to deliver applications to the users. Impact of the daylight savings change to Wyse customers is significantly lower for thin clients as opposed to PCs. The thin client users access the server to use their applications.
The change in DST 2007 will have an impact on some legacy application as well as automated and technology reliant products, for example:
- Calendar / scheduling applications
- Date / time calculations (current and historical)
- Transaction logging (UTC vs. Local Time)
- Tariff billing applications
In many cases making the necessary changes to accommodate the new DST legislation will be a relatively minor task. Users may need to manually adjust the time on their devices when the change occurs.
Wyse products affected by the 2007 DST Changes
Several Wyse products are affected by the 2007 DST legislation. Wyse has completed development and testing on the DST updates and they are currently available on this website.
- Please visit http://www.wyse.com/serviceandsupport/support/downloads.asp
- Choose the Wyse product you wish to update and click "Search".
| Wyse Thin OS |
No patch needed |
Patch not required. The time can be set to roll over now. However you will need to update the wnos.ini (or manually from in the terminal GUI). To achieve this set the following line in the wnos.ini file on one line:
TimeZone='GMT - 05:00' ManualOverride=yes Daylight=yes Start=030207 End=110107 TimeZoneName="Eastern Standard Time" DayLightName="Eastern Daylight Time"
This line should be pasted as one line in your WNOS.ini file. The Start= End= parameters is defined as month|week|day. So Start=030207 is change time in the third month (March) on the second week on the seventh day (Sunday). |
| Wyse Linux |
Patch required: 5150, S50, V50, V50 Dual Video |
Add-on is available at our Software Downloads page. |
| Windows XP Embedded (SP1, SP2) |
Patch required: 9150, S90, V90, V90 Dual Video, 941GXL |
A Wyse Device Manager script is available for installing the hotfix, or removal if a rollback is required. Add-on is available at our Software Downloads page. |
| Windows CE .NET 4.0, 4.1, 4.2, and CE 5.0 |
Update required in the models:3125, 3150, 3230, 3235, 3320, 3360, 3450, 3455, 3630, 3650, S30, V30, V30 Dual Video |
For information, please visit Microsoft's help page for Windows CE devices at:
http://support.microsoft.com/kb/923027
Wyse provides a conversion kit software upgrade to Windows CE 4.2 for the Winterm™ 3125, 3360, and 3235 thin clients. For more information, please contact Wyse Sales. |
| Windows CE 2.12 |
Not Supported |
Windows CE 2.12 has reached the end of its support cycle and will not have a patch provided by Microsoft.
Wyse recommends that current CE v2.12 customers upgrade to Windows CE .NET 4.2. Wyse provides a conversion kit software upgrade to Windows CE 4.2. For more information, please contact Wyse Sales |
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