While not specific to ASK HN submissions, in my experience it's almost useless to submit in the evening (EST). I have submitted several interesting stories that were ignored due to the time of their submission.
I've referenced that article in my post - and used the same dataset as they have. The (other) article is about all posts. I've focused exclusively on Ask HN - where the post's objective is not to educate/entertain/inform but to solicit feedback. The hypothesis is that an Ask HN post demats a higher level of involvement from the reader and hence may exhibit different trends.
