User blog comment:Jho5689/Fairy Tail 337 and onwards/@comment-1359322-20130624070938/@comment-7418318-20130625135139

I didn't forget it, but with her not being a main character, I figured that many other people might have forgotten, so I thought I'd better refer to her that way.

And the 7th July is fitting because it's the first day after they completed the charging of the gate. Since they couldn't expect Fairy Tail to sit idly by, while they kept several of their members imprisoned, it only makes sense go into action sooner rather than later.