I bought this in 11/2006. It automatically adjusted and kept precise time out of the box. That is until DST this year. It is 1 hour behind and will not adjust. They've issued some "emergency" instructions on their website that try to fix the issue but they don't work. Also, they say wait 5 days before contacting them if the clock doesn't adjust right away. 5 days to update? I have an atomic weather station and had no problems with it adjusting automatically to DST. Stay away from this model. It doesn't work for DST and most likely never will.