Contrary to what I wrote Monday, it's a good idea for radio announcers to stress what time it is for a day or two after Daylight Saving Time begins. Inevitably, some people will forget to set one or more clocks ahead, and even some people who have set their clocks ahead might still think it's an hour earlier than it is.
Generally, it shouldn't be necessary to belabor a radio time check, but that's perhaps the one exception.
