Board Thread:Book Questions/@comment-23.112.42.8-20151206223407/@comment-26862257-20170108233318

The day that he died goes by the book, which was published in 2012. Hazel refers to a certain day as "on the eleventh day AG" (AG = After Gus). She wakes up the next morning and her mother tells her that it's July 14th. That's 12 days after Augustus's death, so he must have died on July 2.