title: Windows Time Zone Database
body: <p>I am working on a multi time zone application (.NET 3.5).  We are using the windows time zone database via the TimeZoneInfo class.  All is well within our application, but we have noticed that the windows time zone database is different accross two machines (Windows 7 Ent/Windows Server 2003) that both have the Aug 2011 time zone patch applied (http://support.microsoft.com/?kbid=2570791)?</p>
  
  <p>Can anyone suggest why this is the case? Two versions of windows, same time zone patch, same planet.</p>
  
  <p>This isn't strictly a programming question, perhaps I should post it elsewhere?</p>