TUCSON, Ariz. — Rep. Gabrielle Giffords and other survivors of a deadly shooting rampage in Tucson, Ariz., are gathering to reflect and remember.

Church bells are set to ring at 10:11 a.m. Mountain time on Sunday, the exact moment that a deranged gunman shot Giffords in the head and mowed down a line of people waiting to talk to her outside a grocery store.

Six people were killed, including a 9-year-old girl born on 9/11 and a federal judge. Thirteen others were shot, including the congresswoman.

Giffords, who has undergone a year of grueling therapy, plans to appear at an evening candlelight vigil. An interfaith service is also planned.

Jared Lee Loughner has pleaded not guilty to 49 charges in the shooting. He is being forcibly medicated in prison in a bid to make him mentally fit for trial.