I ' ve watchedClannad but that doesn ' t make me cry but I still haven ' t watch the After Story <| sep |> Actually , we have two conflicting outcomes for what happens when you do the solarflaretimetravel thing . In 1969 , the team was trying to go to another planet , but instead got sent back to the planet they came from and then went back in time . startingpoint to startingpoint , different time In Atlantis when it happened to Shepherd , he arrived at his destination in a different time startingpoint to destination , different time . So , Mitchell could have either arrived on Earth somewhere if his trip ended up like Shepherd ' s arriving at destination , but in a different time , OR he could have popped back out of the gate on the planet where Ba ' al ' s time machine was located , only in the past . Assuming there was a gate on that world in 1929 , that actually would ' ve worked out a lot better for Mitchell since he could choose when to return to Earth and do the least amount of damage to the timeline .