Q176513: Incorrect Daylight Savings Settings for Finnish Time Zone
Article: Q176513
Product(s): Microsoft Windows NT
Version(s): WinNT:4.0
Operating System(s):
Keyword(s):
Last Modified: 09-AUG-2001
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The information in this article applies to:
- Microsoft Windows NT Workstation version 4.0
- Microsoft Windows NT Server version 4.0
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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for daylight-saving time are no longer valid for Finland.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.
1. Locate the time zone in the registry and create a new zone:
a. Run Registry Editor (Regedt32.exe).
b. 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.
c. On the Edit menu, click Add Key and type the key name, Finnish Standard
Time.
NOTE: Leave the Class entry blank.
d. Select the newly created Finnish Standard Time key.
e. 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.
a. 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.
b. 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:
a. Click Start, point to Settings, click Control Panel, and then double-
click Date/Time.
b. Click the Time Zone tab.
c. 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
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Keywords :
Technology : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400
Version : WinNT:4.0
Issue type : kbprb
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