Anything that is setup as a a named based recording on the 630 adjusts automatically between Daylight and Standard time. Manual Timers on any of the 6xx series be they auto-tunes or reminders do not adjust when the time changes. It is inconvenient but you must go into each manual timer as if you are editing them, no changes have to be made you just have to visit them and then use the go back button to go to the next one and repeat. I usually wait for the blue progress/reprogramming bar to appear before going to the next one. If you have back to back auto-tunes make sure you start at the correct end of the sequence of timers depending on whether you are going an hour forward or an hour back. If springing ahead adjust the last one in the sequence. If falling back adjust the first one in the sequence so that you do not create a conflicting auto-tune.