User blog comment:Hfc2x/Main story timeline/@comment-10733658-20131221091317

Additions: (?)

785: Ymir is trapped in her Titan form. (She states she was like this for 60 years, and emerged in 845. Ergo, we can be certain that was the year it happened.)

845:


 * Berwick/Marcel devoured by Ymir.


 * Ymir regains human form.


 * Grisha is summoned to the Interior in the hours prior to the Colossal Titan's appearance. (He leaves midday, and the attack appears to have happened in the evening hours.)


 * The Titan Shifters infiltrate the Walls.


 * 5 days after the Fall of Shiganshina, Historia's mother is murdered and Historia is forced to take the identity of Krista Lenz.