Looking forward to having a little more sunlight in the morning? Time to set those clocks back this weekend as Daylight Savings Time ends at 2 a.m. Sunday.

Remember, you’ll "fall back" and set your clocks back one hour. Many electronic devices automatically adjust when Daylight Savings Time begins or ends. It begins again on March 10, 2013.

That extra hour gives you a chance to sleep in after the busy Halloween week. 

When you change your clocks in the fall and spring, it’s also a good time to change smoke detector batteries and check to make sure device are in working order.

Arizona, Puerto Rico, Hawaii, U.S. Virgin Islands and American Samoa do not observe Daylight Savings Time. Around the world, about 75 countries and territories have at least one location that observes daylight saving time, according to TimeandDate.com.

On the other hand, 164 don't observe the time change at all.