Probably not anything that interesting or considerate.
31 August is the time in Japan right now (as well as Europe and most of the US), so the dateline makes sense.
1 September is the date the story will appear in print, according to the article's footnote. I wouldn't be surprised if the software was focused on the actual newspaper when it was designed, and so the URL will correspond to the actual newspaper (in case of citations, etc.).
