If we would like to display in our reporting services report the timezone along with Global.ExecutionTime,
then, these are the steps...
In report > properties add this function to the code section
Function GetOffset() As String
Return TimeZone.CurrentTimeZone.GetUtcOffset(DateTime.Now).ToString()
End Function
Then in your report footer add a textbox where you want the value displayed and set the Value expression to:
=Code.GetOffset()