Final answer:
Ezra's father's death is not specifically dated in the book Illuminae, and the provided references are unrelated to the events of the story.
Step-by-step explanation:
In the book Illuminae, Ezra's father's death is not specifically dated and is not a focal event within the story. The dialogue you've provided between Krogstad and Nora regarding the illness and subsequent death of a father is from Henrik Ibsen's play, A Doll's House, and is not related to the events in Illuminae.
The poem by Li Young Li you've referenced also discusses the theme of fathers but is again not connected to the events in Illuminae. If you are looking for specific details related to Ezra's father in Illuminae, these would be found within the book's unique narrative structure of emails, documents, and interview transcripts, which does not include a recorded date for the death of Ezra's father.