Didn't fully understand that paragraph when I first read it! Given that I cannot change the source local datetime - is there anyway I can convert these ambiguous date times into UTC?
Kind of feel I'm back to my original question... given a local date time for the entire year incrementing by 1 minute each time how can I convert this local time into UTC time and get correct results, even during the ambiguous date time period when the local date time changes from Daylight Saving Time and back again?