Daylight Savings Time Not Advancing (140639)
The information in this article applies to:
- Microsoft Windows NT Workstation 3.51
- Microsoft Windows NT Server 3.51
This article was previously published under Q140639 SYMPTOMS
On a small percentage of computers running Windows NT, a clock or
application running on the desktop does not reflect the Daylight Savings
time change even though the user has set Date/Time to "Automatically Adjust
for Daylight Saving Time" in the Control Panel. Instead, the time displayed
on applications such as the Accessories Clock show a continuation of
Daylight Saving Time while the Control Panel's Date/Time displays the new
Standard Time.
CAUSE
Each hour, Windows NT runs code that examines the system time versus the
time stored in the CMOS clock. In some computers, Windows NT's system time
(which is computed by interrupts) can drift. If more than one minute of
drift is detected and if this drift is detected and corrected during the
one hour between 1am and 2am on Daylight Savings Time/Standard Time
switch over dates, time will not switch properly.
WORKAROUND
To work around this problem, open Control Panel, click the Date/Time icon,
and click OK. Do not click the Cancel button because the system time will
not change but the application times will jump ahead by one hour on some
computers.
RESOLUTION
This problem has been corrected in the latest Service Pack for Windows NT
version 3.51.
STATUS
Microsoft has confirmed this to be a problem in Windows NT version 3.51.
This problem was corrected in the latest Windows NT 3.51 U.S. Service Pack.
For information on obtaining the Service Pack, query on the following word
in the Microsoft Knowledge Base (without the spaces):
| Modification Type: | Major | Last Reviewed: | 11/4/2003 |
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| Keywords: | KB140639 |
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