This Sunday marks the end of daylight saving time. Remember to turn your clocks back one hour before you go to sleep Saturday night. It’s also a good time, according to the Washington State Fire Marshal’s Office, to change your smoke alarm batteries. Working smoke alarms save lives by cutting the risk of dying in a home fire by half. But unfortunately, they could save even more lives that are lost needlessly because so many smoke alarms are not operational. Some smoke alarms have non-replaceable 10-year batteries, and are designed to remain effective for up to 10 years. If they begin to chirp though, that’s a warning that the battery is low, so replace the entire smoke alarm right away. Also, replace any smoke alarm if the manufacture date is more than 10 years old.