The numbers on Donnie Darko’s arm, 28:06:42:12, show the time left until the world ends: 28 days, 6 hours, 42 minutes, and 12 seconds. The character Frank gives him this countdown. It represents how long the Tangent Universe will exist and plays an important role in the film’s apocalyptic theme. Hand screen printed with glow-in-the-dark ink on a black regular fit T-shirt.