Daylight Saving Time and Windows 98

Date: 7 March 2007

Author:

Bob Jonkman
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SOBAC Microcomputer Services

For those of us who are still using Windows 98 I've created a Registry file to update the Time Zone definitions for the North American Daylight Saving Time changes.

The attached file includes changes for the Alaskan, Pacific, Mountain, Central, Eastern, Atlantic and Newfoundland timezones, setting Daylight Saving Time to start on the second Sunday in March and ending on the first Sunday in November.

This file does NOT include any time zone information for Hawaii, Arizona, Indiana or Saskatchewan, which have either no DST or peculiar start/end times for DST.

I've only tested this file on Windows 98SE. It may work on Win95, Win98 and WinME, but no guarantees.

Download the registry file timezones2007.reg

If you want to roll your own the Microsoft Time Zone Editor tool for Win95 is still available from Microsoft's Windows 95 Kernel Toys Set page.

More Daylight Saving Time Fias^H^H^H^H info can be found at the National Research Council Home Page

--Bob.

Win98 Registry File timezones2007.reg 


REGEDIT4

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Time Zones]
@="Pacific Standard Time"


[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Time Zones\Hawaiian]
"Display"="(GMT-10:00) Hawaii"
"Dlt"="Hawaiian Daylight Time"
"Std"="Hawaiian Standard Time"
"MapID"="28,29"
"TZI"=hex:58,02,00,00,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,\
  00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Time Zones\Alaskan]
"Display"="(GMT-09:00) Alaska"
"Dlt"="Alaskan Daylight Time"
"Std"="Alaskan Standard Time"
"MapID"="30,31"
"TZI"=hex:1c,02,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,00,\
  00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Time Zones\Pacific]
"Display"="(GMT-08:00) Pacific Time (US & Canada); Tijuana"
"Dlt"="Pacific Daylight Time"
"Std"="Pacific Standard Time"
"MapID"="32,33"
"TZI"=hex:e0,01,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,00,\
  00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Time Zones\Mountain]
"Display"="(GMT-07:00) Mountain Time (US & Canada)"
"Dlt"="Mountain Daylight Time"
"Std"="Mountain Standard Time"
"MapID"="34,35"
"TZI"=hex:a4,01,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,00,\
  00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Time Zones\Central]
"Display"="(GMT-06:00) Central Time (US & Canada)"
"Dlt"="Central Daylight Time"
"Std"="Central Standard Time"
"MapID"="36,37"
"TZI"=hex:68,01,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,00,\
  00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Time Zones\Eastern]
"Display"="(GMT-05:00) Eastern Time (US & Canada)"
"Dlt"="Eastern Daylight Time"
"Std"="Eastern Standard Time"
"MapID"="38,39"
"TZI"=hex:2c,01,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,00,\
  00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Time Zones\Atlantic]
"Display"="(GMT-04:00) Atlantic Time (Canada)"
"Dlt"="Atlantic Daylight Time"
"Std"="Atlantic Standard Time"
"MapID"="40,41"
"TZI"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,00,\
  00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Time Zones\Newfoundland]
"Display"="(GMT-03:30) Newfoundland"
"Dlt"="Newfoundland Daylight Time"
"Std"="Newfoundland Standard Time"
"MapID"="-1,81"
"TZI"=hex:d2,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,00,\
  00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00