I Think easiest way is to use a function inside my application to fix time zone for me then send data to/From Server. I used 2 different functions :
Friend tZone As TimeZoneInfo
Public Function TimeZone_Get(ByVal time As DateTime, ByVal Tolocal As Boolean) As DateTime
Dim t As DateTime = time
If Tolocal = True Then
t = TimeZoneInfo.ConvertTimeFromUtc(time, tZone)
End If
Return t
End Function
Public Function TimeZone_Set(ByVal time As DateTime, ByVal Islocal As Boolean) As DateTime
Dim t As DateTime = time
If Islocal = True Then
t = TimeZoneInfo.ConvertTimeToUtc(time, tZone)
End If
Return t
End Function