Board Thread:Boruto: Naruto the Movie/@comment-27453864-20151223012915/@comment-9782468-20151223072133

@Lilyxflower, Sasuke left the village when Kakashi was in office. We don't know when he came back or when Sarada was conceived

EDIT: scratch that, read his page and apparently he let Sakura come with him at somepoint and they conceived her then.