A Show HN on Hacker News is a post, titled "Show HN", for something you made that other people can try right now. It has no launch day and Hacker News names no fee: the post goes up the moment you submit it, and it reaches the Show page only after it clears a small points threshold.
Pick the day and hour you plan to post and your time zone in the planner above. It shows that moment in UTC and how Show HN posts did in that slot.
The rules come down to three tests
People can try it now, ideally with no signup or email in the way. Blog posts, sign-up pages, landing pages and fundraisers are off topic.
It is your own work, and you are around to discuss it, under a username that is a person, not your company.
The thread stays honest. Never ask friends to upvote or comment: Hacker News penalizes or bans the submissions, accounts and sites that do. No booster comments, and no deleting and reposting.
The first test stopped us. Oneprofile needs a signup, so we decided not to post a Show HN for now. "Ideally" is not "never", but we think the rule is right: a Show HN promises that a reader can click and see the thing working.
How to read the timing
We counted every Show HN post in Hacker News's public search API over a full year, by the UTC weekday and hour it was created, and kept only the counts. The method is written under the grid.
Read the weekday and hour totals before single cells. Most cells rest on only a handful of posts that did well, so a gap between neighbours is probably noise.
Hacker News publishes no best time. Its FAQ says ranking divides points by a power of the time since a story was submitted, so the first hours matter, and nothing in its rules ties them to a weekday. Treat the hour as a tiebreak, and pick one when you can stay in the thread for the rest of the day.
After you post
Answer the questions in the thread yourself. Hacker News readers build things, and some of them buy, but the buyers you most want probably never open the Show page. Oneprofile can list the companies whose makers posted a Show HN, with a free count and preview, and find the people who fit your product so you can write to them by email and LinkedIn.
