Final DST Reminder

Final DST Reminder

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[Today's post comes to us courtesy of Justin Crosby]  

Please make sure that you have applied the DST patches to your SBS server before Sunday October 28, 2007.  This Sunday is the date than an unpatched machine will "fall back" one hour.  A patched machine will "fall back" on November 4, 2007.  By fall back I mean the time will change to one hour earlier.

There are several methods to check for the patches:

1. Use the official Microsoft Daylight Savings Time Help Center at http://support.microsoft.com/gp/cp_dst
2. Run the SBS 2003 Best Practices Analyzer from http://www.microsoft.com/downloads/details.aspx?FamilyId=3874527A-DE19-49BB-800F-352F3B6F2922&displaylang=en
3. To check the OS only (client or server) run the "w32tm /tz" command.

If you have any further questions on DST and the DST changes please see: http://support.microsoft.com/gp/cp_dst

How to check the timezone setting using "w32tm /tz":

The output will look like this for the Central timezone on a patched machine:
Time zone: Current:TIME_ZONE_ID_DAYLIGHT Bias: 360min (UTC=LocalTime+Bias)
[Standard Name:"Central Standard Time" Bias:0min Date:(M:11 D:1 DoW:0)]
[Daylight Name:"Central Daylight Time" Bias:-60min Date:(M:3 D:2 DoW:0)]

What you want to look for is M:11, this translates to “Month 11: November” for
start of Standard Time. (M:3 which is “Month 3: March” for start of Daylight
Standard Time.)

An unpatched machine will show the following:
Time zone: Current:TIME_ZONE_ID_STANDARD Bias: 360min (UTC=LocalTime+Bias)
[Standard Name:"Central Standard Time" Bias:0min Date:(M:10 D:5 DoW:0)]
[Daylight Name:"Central Daylight Time" Bias:-60min Date:(M:4 D:1 DoW:0)]

A patched machine that does not have "Automatically adjust clock for daylight saving
changes" set will show:
Time zone: Current:TIME_ZONE_ID_DAYLIGHT Bias: 360min (UTC=LocalTime+Bias)
[Standard Name:"Central Standard Time" Bias:0min Date:(M:11 D:1 DoW:0)]
[Daylight Name:"Central Standard Time" Bias:0min Date:(M:11 D:1 DoW:0)]

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