Don’t forget to set your clocks back an hour Saturday night since Daylight Saving Time officially ends at 2 a.m. Nov. 3. As part of the “Change Your Clock, Change Your Battery” campaign, the Richardson Fire Department encourages everyone to also change smoke alarm/carbon monoxide (CO) detector batteries at this time. Having a working smoke alarm/CO alarm doubles the chances of escaping and surviving a home fire or carbon monoxide leak.