What is the climax in Oedipus Rex?

In Oedipus Rex, the climax occurs when Oedipus learns the truth about his identity and his past actions. Upon discovering that he unknowingly killed his father, Laius, and married his mother, Jocasta, Oedipus is overwhelmed with guilt and horror. This revelation marks the turning point in the play and leads to a series of tragic events, including Jocasta's suicide and Oedipus's self-blinding.