It was originally published online on Tor.com and as an ebook in 2011, and was subsequently reprinted in Some of the Best from Tor.com: 2011 Edition and Year's Best SF 17.

Anders said in a 2016 interview that in this novelette "[t]he big challenge for me ... was how to have a satisfying resolution" to the which-future-is-right question: "they can’t both be right, but they kind of both are right, and how does that work?

[5] Originally published online on Tor.com (now Reactor)[6] and in ebook format through Macmillan[7] on June 8, 2011, "Six Months, Three Days" has been collected into various books.

[9] Jim C. Hines said Anders' resolution to the fixed vs. multiple futures conflict was "simultaneously tragic and scary and hopeful", but added that it "felt right for the story".

[10] In 2013, Deadline Hollywood announced that a television adaptation was being prepared for NBC, with script written by Eric Garcia.