Incorrect Daylight Savings Settings for Finnish Time Zone

• Microsoft Windows NT Workstation version 4.0
• Microsoft Windows NT Server version 4.0

SYMPTOMS

On a computer running Windows NT in the Finnish Time Zone, daylight-saving time changes are not applied at the correct time and date.

CAUSE

Since adopting new European Union standards, the GFT Standard Time Zone settings for daylight-saving time are no longer valid for Finland.

For additional information, please see the following articles in the Microsoft Knowledge Base:

ARTICLE-ID: Q156084
TITLE : Windows NT 3.51 Does Not Have Updated Daylight Saving Time

RESOLUTION

The daylight-saving time settings for Finland do not match those for Greece and Turkey, with whom Finland shares the existing GFT standard time zone. It is not appropriate to amend the settings for this time zone. Create a new time zone specifically for Finland instead.

Follow these instructions to manually create the new time zone:

WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.

For information about how to edit the registry, view the "Changing Keys And Values" online Help topic in Registry Editor (Regedit.exe) or the "Add and Delete Information in the Registry" and "Edit Registry Data" online Help topics in Regedt32.exe. Note that you should back up the registry before you edit it.

1. Locate the time zone in the registry and create a new zone:
   
   
   1. Run Registry Editor (Regedt32.exe).
   
   
   
   2. Go to the following key in the registry:
      
      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion
      \Time Zones
      
      NOTE: The above registry key is one path; it has been wrapped for readability.
   
   
   
   3. On the Edit menu, click Add Key and type the key name, Finnish Standard Time.
      
      NOTE: Leave the Class entry blank.
   
   
   
   4. Select the newly created Finnish Standard Time key.
   
   
   
   5. On the Edit menu, click Add Value and add the following four values:
      
      

      Value Name	Data Type	Value
      Display	REG_SZ	(GMT+02:00) Helsinki
      Dlt	REG_SZ	Finland Daylight Time
      MapID	REG_SZ	-1,67
      TZI	REG_BINARY	*see NOTE that follows

      
      
      NOTE: The TZI value includes the definitions for the start and end of daylight-saving time. The value to be entered into the binary editor in hex follows:
      
      88FFFFFF00000000C4FFFFFF000009000000050000000000000000000000030000000
      5000000000000000000
      
      NOTE: The above registry value is one entry; it has been wrapped for readability.
   
   
   



2. To help avoid confusion, it is recommended that you remove Helsinki from the line display of the GFT Standard Time Zone in Control Panel.
   
   
   1. Go to the following key in the registry:
      
      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion
      \Time Zones\GFT Standard Time
      
      NOTE: The above registry key is one path; it has been wrapped for readability.
   
   
   
   2. Double-click the display value and remove Helsinki. The value should look like this:
      
      Value Name: Display
      Data Type : REG_SZ
      Value : (GMT+02:00) Athens, Istanbul
   
   
   



3. To make the new time zone current, follow these steps:
   
   
   1. Click Start, point to Settings, click Control Panel, and then double- click Date/Time.
   
   
   
   2. Click the Time Zone tab.
   
   
   
   3. Select (GMT+02:00) Helsinki for the Finnish Standard time zone and click OK.
   
   
   

MORE INFORMATION

To help you automate this process, a script follows for the Windows NT resource kit tool, Regini.exe. You must customize the key name and the values for your installation. Please note that the bytes in the REGINI script are ordered differently than shown by the Registry Editor. After you run the script, repeat step three as previously shown.

This following sample is for the English version of Windows NT 4.0:

 \Registry\Machine
   Software
    Microsoft
          Windows NT
            CurrentVersion
               Time Zones
                  Finnish Standard Time
         Display = REG_SZ (GMT+02:00) Helsinki
         Dlt = REG_SZ Finland Daylight Time
         MapID = REG_SZ -1,67
         TZI = REG_BINARY 0x2c \ 
            0xFFFFFF88 \ 
            0x00000000 \ 
            0xFFFFFFC4 \ 
            0x000A0000 \ 
            0x00050000 \ 
            0x00000004 \ 
            0x00000000 \ 
            0x00030000 \ 
            0x00050000 \ 
            0x00000003 \ 
            0x00000000

 \Registry\Machine
   Software
    Microsoft
          Windows NT
            CurrentVersion
               Time Zones
                  GFT Standard Time
         Display = REG_SZ (GMT+02:00) Athens, Istanbul 

Additional query words: timezone time zones

Keywords : NTSrvWkst
Version : WinNT:4.0
Platform : winnt
Issue type : kbprb