The second stage of jump procedure using a Ring Dynamics stargate is obtaining a reference-frame trap, thus ensuring that you arrive in your destination system in the same sequence and association to the empire time frame that you were in when you left, thus preserving chronological consistency.
In urban myth and pulp fiction, this is the procedure that prevents you from wondering why the dinosaurs are warning you off their nice carboniferous planet when you were told to deliver a load of colony prefabs, or from having your extropy sucked out by the ice giants at the end of the universe who are so glad you turned up to feed ‘em high temperatures and ordered states.
In theory, this is the procedure careful adjustment of which permits you to indulge in predestination paradoxes, knight’s-move oracles, and other cunning manipulations of the informational content of your future light-cone.
In practice, this is the procedure that stops you from coming out the other end of the wormhole as a light-year long smear of exotic particles. The universe hates time travel, and is not shy about telling you this.