Board Thread:Questions and Answers/@comment-26253280-20160721060642

On what base (this wikia) had to choose Unified Story Timeline : Touma meet/fight Mikoto for the first at July 17 not July 19 ?

The only reference is only in :

Toaru Kagaku no Choudenjihou (Railgun) Manga Vol 1 Chapter 3 ???

but:

 