Microsoft Outlook Daylight Savings Fix for Calendar
There is a setting on a Windows PC to “Automatically adjust clock for daylight saving changes.” If you change this setting your appointments and meetings in your Microsoft Outlook calendar may be moved. Outlook does this intentionally and is not a bug.
Below is a code sample of how to fix your appointments.
Attribute VB_Name = “DayLightSavingsFix”Public Sub DayLightSavingsFix()‘***************************************************************************‘This macro will go through all items in a Calendar and change the start time to one hour back.‘It will ignore anything that is not an Appointment or a Meeting‘It will also ignore any all day events.‘This macro will change only items that were created before 1/1/08‘***************************************************************************
Dim CurFolder, MyItems
Dim NumItems As Integer, i As Integer
Dim MyItem As Object
‘Use whichever folder is currently selected
‘This means that you should run this macro with your Calendar folder selected.
Set CurFolder = Application.ActiveExplorer.CurrentFolder
‘Make sure the current folder is a Calendar folder
If CurFolder.DefaultItemType = 1 Then
‘get a handle on the items in the Calendar folder
Set MyItems = CurFolder.Items
NumItems = MyItems.Count
‘loop through all of the Calendar items
For i = 1 To NumItems
On Error Resume Next ‘ignore any errors
Set MyItem = MyItems.Item(i)
If TypeName(MyItem) = “AppointmentItem” Then
‘check to see if item was created before Jan 01 and not an all day event
If DateDiff(”d”, MyItem.CreationTime, “1/1/08 2:00:00 AM”) >= 1 And MyItem.AllDayEvent = False Then
‘change the start time back one hour, end time is automatically adjusted
MyItem.Start = DateAdd(”h”, -1, MyItem.Start)
MyItem.Save
End If
ElseIf TypeName(MyItem) = “MeetingItem” Then
‘check to see if item was created before Jan 1 and not an all day event
If DateDiff(”d”, MyItem.CreationTime, “1/1/08 2:00:00 AM”) >= 1 And MyItem.GetAssociatedAppointment.AllDayEvent = False Then
‘change the start time back one hour, end time is automatically adjusted
MyItem.GetAssociatedAppointment.Start = DateAdd(”h”, -1, MyItem.GetAssociatedAppointment.Start)
MyItem.Save
End If
End If
Next i
MsgBox “Done”
Else
MsgBox “The current folder needs to be a Calendar folder before running this macro.”
End If
‘ Cleanup
Set MyItem = Nothing
Set MyItems = Nothing
Set CurFolder = Nothing
End Sub
To run this code, open Microsoft Outlook and click Tools, Marco, Visual Basic Editor. Your screen may look something like the following.
Paste the code into the right side. Adjust the date for your own needs.
Note: This code has been tested and confirmed with Microsoft Outlook versions 2000, 2002 and 2003. The complete code can also be downloaded here.