Best time to post on Threads
Three slots worth testing, what Threads's ranking actually rewards, and why a table of hours is a hypothesis rather than an answer.
Three slots to start with
These are in your audience's local time, which is the part most advice leaves out. If your audience is elsewhere, the calculator converts them into your own hours so you schedule the right instant.
What Threads actually rewards
Threads leans harder on replies than any network except X, and its feed mixes followed accounts with recommendations aggressively. A post that gets a conversation going will be shown to people who have never heard of you, which makes it unusually forgiving of a small following.
Format matters more than the hour
Text-first, conversational, and short. Threads rewards a question or an opinion more than a polished announcement. Images help but are not the point, which is the opposite of its Instagram parent.
Worth knowing before you automate Threads: Threads publishing is tied to your linked Instagram account, so the Instagram account requirements apply — Business or Creator, linked to a Page.
How to test this properly
Threads' audience is still shifting, so figures from a year ago are unreliable. Test recently and retest; this is the network where a stale benchmark is most likely to mislead you.
The method that works on every network: change one variable, hold everything else, and give it long enough that you are measuring the change rather than the noise. Two weeks on Threads is usually enough.
Questions
Is Threads worth posting to separately?
Yes, if you are prepared to change the register. Cross-posting X content verbatim underperforms noticeably — Threads rewards a warmer, more conversational tone.
Does posting time matter?
Moderately, and less than on X. The recommendation-heavy feed surfaces good posts well after they were published.
How does it differ from X in practice?
Longer half-life, more forgiving of small accounts, and much less tolerant of link-dropping and self-promotion.
Do I need an Instagram account?
Yes. Threads is tied to Instagram, including for API publishing.