smjacb Tonfotos can only rely on the information that is present in the file metadata. If it has wrong date (which is typically the case with scanned photos), it will take it for granted. There is no way it can know the real date when photo was actually made. Crystal ball does come as part of the deal 🙂
However, Tonfotos can help you to actually correct all dates for photos. You can use F3 to set proper date into photo metadata. You can use photo inscriptions, ask your relatives or deduce right date any other way and then correct it with Tonfotos. However Tonfots will not be able to that instead of you, sorry.