Same. I think that timetable in Touma's cellphone is one of several timetable. Since a lot of schools participated in Daihaseisai, not every athletic event mentioned during series does not correspond to Touma's school.
I also saw several article that have used Astral Buddy Arc header. Do you think that is the right arc name for the story arc? If I recall correctly, there isn't official arc name for the first arc of Astral Buddy. Beside this, Yuzuriha Ringo arc is good for Dark Matter manga arc name.