Daylight saving time, which began in March, will end at 2 a.m. Sunday, Nov. 3. In other words, tomorrow. 
This is the time of the year when clocks are turned back one hour at 2 a.m. to 1 a.m. This marks the resumption of Eastern Standard Time until March 2014. The recommendation is to turn clocks back prior to going to bed tonight
Additionally, it is recommended that batteries on smoke alarms and carbon monoxide detectors be changed, or at least checked, at this time.