Dave LeMote wipes down a post clock at Electric Time Company, Inc. in Medfield. Most Americans will set their clocks 60 minutes forward before heading to bed Saturday night, but daylight saving time officially starts Sunday at 2 a.m. local time.

Dave LeMote wipes down a post clock at Electric Time Company, Inc. in Medfield. Most Americans will set their clocks 60 minutes forward before heading to bed Saturday night, but daylight saving time officially starts Sunday at 2 a.m. local time.