I have written a script which checks the DST start date and records the machine name and DST results in a text file. The script obtains the data by querying the WMI service and so it is not dependant on any specific registry setting or the existence of a specific service pack/hotfix etc.

There are a few caveats which need to be adhered to for this to work:

• The script must be activated from an account with appropriate rights to query the remote machine
• DNS records must be correct for each remote machine
• The remote machine must be running a Microsoft based OS (NT4/windows 2000 and above)

As a result of the caveats, the following server types will need to be checked through some other method:

• Linux/Unix machines
• Non-domain servers (DMZ for eg)
• Any machines that were shutdown/powered off at the time thescriptis run ( like virtual machines etc)

Daylight Day – Which occurrence of the “Day of week” during the month (5 is always the last occurrence in any month)
Daylight Day of Week – The day of the week on which the change occurs (Zero being Sunday)
Daylight Month – Which month of the year