I wonder what the optimal time is to post to HN. Do people usually wake up, check HN and then go about their day? If so, around 9-10:30AM EST? Or maybe if most HNers come from the west coast, would it be 9 - 10:30AM PST?
[I think; subjective analysis etc etc]
When you have good content and your luck is at its maximum.
That I didn't think about that way immediately probably says that you have a much closer relationship with the HN readership than I do. :-)