Query: When did Julian become Augustus?
Context: Constantine's nephew Julian rejected the "Galilean madness" of his upbringing for an idiosyncratic synthesis of neo-Platonism, Stoic asceticism and universal solar cult. Julian became Augustus in 361 and actively but vainly fostered a religious and cultural pluralism, attempting a restitution of non-Christian practices and rights. He proposed the rebuilding of Jerusalem's temple as an Imperial project and argued against the "irrational impieties" of Christian doctrine.