Microsoft Schedule+ Support Page - Incorrect Daylight Savings Settings for Finnish Time Zone [Q176513]

Incorrect Daylight Savings Settings for Finnish Time Zone [Q176513]

PSS ID Number: Q176513
Article last modified on 01-22-1999

The information in this article applies to:
- Microsoft Windows NT Workstation version 4.0
- Microsoft Windows NT Server version 4.0

IMPORTANT: This article contains information about editing the registry. Before you edit the registry, make sure you understand how to restore it if a problem occurs. For information on how to do this, view the "Restoring the Registry" online Help topic in Regedit.exe or the "Restoring a Registry Key" online Help topic in Regedt32.exe.

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Since adopting new European Union standards, the GFT Standard Time Zone settings for daylight-saving time are no longer valid for Finland.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

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:
```
88FFFFFF00000000C4FFFFFF0000090000000500000000000000000000000300000005000000000000000000
```
  NOTE: The above registry value is one entry; it may be wrapped by your browser for readability. [You can copy/paste it to your Registry Editor. -- CB]
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 may be wrapped by your browser 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
     
```
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].

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

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

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