The Weasleys have a magical clock in their home, The Burrow. It doesn't tell the time, but rather tells where and how the Weasley family members are.
Mrs Weasley glanced at the grandfather clock in the corner. Harry liked this clock. It was completely useless if you wanted to know the time, but otherwise very informative. It had nine golden hands, and each of them was engraved with one of the Weasley family's names. There were no numerals around the face, but descriptions of where each family member might be. 'Home', 'school' and 'work' were there, but there was also 'lost', 'hospital', 'prison' and, in the position where the number twelve would be on a normal clock, 'mortal peril'.
— Harry Potter and the Goblet of Fire, Chapter 10: "Mayhem at the Ministry", by J.K. Rowling
Fred was killed during the Battle of Hogwarts
in Harry Potter and the Deathly Hallows, do we know what happened to his hand on the clock?