タイムスタンプを無視して、日付を操作する WMI でファイルを列挙するだけで、月と年の属性を比較するだけのほうがよいでしょう。
strComputer = "."
Set objWMIService = GetObject("winmgmts:" _
& "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2")
Set colFiles = _
objWMIService.ExecQuery("Select * From CIM_DataFile Where Drive = 'E:' and Path = '\\Test\\'")
For Each objFile in colFiles
dtCreationDate = WMIDateStringToDate(objFile.CreationDate)
If Day(Now)&Month(Now)&Year(Now) = Day(dtCreationDate)&Month(dtCreationDate)&Year(dtCreationDate) Then
WScript.Echo objFile.Name
End If
Next
Function WMIDateStringToDate(sCreatoionDate)
WMIDateStringToDate = CDate(Mid(sCreatoionDate, 7, 2) & "/" & _
Mid(sCreatoionDate, 5, 2) & "/" & Left(sCreatoionDate, 4) _
& " " & Mid (sCreatoionDate, 9, 2) & ":" & _
Mid(sCreatoionDate, 11, 2) & ":" & Mid(sCreatoionDate, 13, 2))
End Function