When Do We Turn Back the Clocks?

Those 7 a.m. commutes will get much lighter next week. Officially, Daylight Savings Time ends at 2 a.m. on Sunday, Nov. 4.

Remember, you’ll “fall back” and set your clocks back one hour before going to bed on Saturday night. Many electronic devices automatically adjust when Daylight Savings Time begins or ends.

While the sun will rise at about 6:30 a.m. next week versus about 7:30 a.m. this week, it will also set much sooner. The sun will go down at about 4:30 p.m. next week versus about 5:30 p.m. tonight.

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 the devices are in working order. The Wenham Fire Department issued a reminder on Friday, saying that the most fatal fires occur in the winter.

"Making sure the smoke alarms are working is a simple, effective way to help your family survive an unexpected fire," State Fire Marshall Stephen Coan said in a reminder distributed by Wenham Fire Capt. Jeff Baxter.

Arizona, Puerto Rico, Hawaii, U.S. Virgin Islands and American Samoa do not observe Daylight Savings Time. Of course, all of Massachusetts takes part in it.

It begins again on March 10, 2013.