Ancient Greek literature
Seven works of Sophocles have survived, the most acclaimed of which are the three Theban plays, which center around the story of Oedipus and his offspring. The Theban Trilogy consists of "Oedipus the King", "Oedipus at Colonus", and "Antigone". Although the plays are often called a "trilogy," they were actually written many years apart. "Antigone", the last of the three plays sequentially, was actually first to be written, having been composed in 441 BC, towards the beginning of Sophocles's career. "Oedipus the King", the most famous of the three, was written around 429 BC at the midpoint of Sophocles's career. "Oedipus at Colonus", the second of the three plays chronologically, was actually Sophocles's last play and was performed in 401 BC, after Sophocles's death.
Antigone (Euripides play)
The date for "Antigone" has not been definitively established. However, metrical analysis on the extant fragments, particularly the incidence of resolutions, by Cropp and Fick indicates that the play was likely written in the latter part of Euripides' life, between 420 BCE and 406 BCE. In addition, a scholiast remark indicates that another play of Euripides, "Antiope", was produced after 412. However, metrical analysis of the extant fragments of "Antiope" indicate a much earlier date. This leaves open the possibility that the scholium erroneously referred to "Antiope" but meant "Antigone", or originally named "Antigone" but this became corrupted over time. If so, that would indicate that "Antigone" was produced between 411 and 406 BCE.