Gurren Lagann timeline

The timeline of Gurren Lagann begins roughly 1,000 years after the events of the First Anti-Spiral War. The second arc of the series happens 7 years after the first arc, while the third arc takes place immediately after the second. The epilogue takes place 20 years later.

First Half
The first half of Gurren Lagann is set roughly 1,000 years after the First Anti-Spiral War.

Second Half
The second half of Gurren Lagann is set 7 years after the defeat of Lordgeonome at the hands of Simon.

Epilogue
The epilogue of Gurren Lagann is set 20 years after the defeat of Antispiral at the hands of Simon.