When does Agatha All Along take place on the Marvel timeline?
With that, we can deduce that Agatha All Along is set three years after the events of WandaVision, which in turn took place three to four weeks after Avengers: Endgame. In short, the new Disney Plus series is set in late 2026 or even early 2027. If accurate, that means it's the latest-stage title in the whole of the MCU.