The best time to post on X, according to five studies
Buffer analysed 8.7 million posts and rates 6 to 11pm the weakest hours on X. Metricool analysed 2.1 million and calls 9pm the global peak. Both are honest readings of real data.
8 minute read
The short answer, and the asterisk it comes with
If you want one window to start from: weekday mornings, roughly 9 to 11am in your audience's local time, Tuesday through Thursday. That is where the largest published datasets overlap, and on X the overlap is noticeably tighter than it is on Instagram or TikTok. The asterisk is that one of the five studies below puts the single best hour of the entire week at 9pm, which sits inside the block another study names the weakest stretch of every day. Neither is being careless. They measured different things, about different accounts, in different time zones. X is also the platform where the clock plausibly matters most, because a post's useful life is short, so the disagreement is worth understanding rather than picking a side.
What each study actually found
Buffer analysed more than 8.7 million posts and landed on Tuesday at 9am as the strongest single slot, followed by Wednesday at 10am and 9am, with Wednesday, Tuesday and Thursday the best days and 6 to 11pm the weakest hours across the week. Sprout Social, working from close to 2 billion engagements across roughly 307,000 profiles measured between late November 2025 and late February 2026, put the peak at 12 to 6pm Tuesday through Thursday and advised skipping Saturday entirely. Hootsuite's guidance is 9 to 11am on Wednesday, Thursday and Friday, with anything before 5am the worst slot of the week. SocialPilot, from around 700,000 posts across more than 50,000 accounts, favours 8 to 11am on weekdays. Metricool, from 2,144,853 posts across 23,561 accounts, found connected users peaking globally at 9pm.
The morning-versus-evening contradiction
The sharpest split in the X data is not about days, it is about time of day. Buffer's ranking is unambiguous that the evening block, 6 to 11pm, produces the lowest engagement on every day of the week. Metricool's study points at 9pm as the hour when the largest number of people are actually connected to the platform worldwide. SocialPilot sits somewhere in between, recommending mornings on weekdays but adding an 8pm slot on Saturday. This is not a contradiction in the raw data so much as a contradiction in what the two are counting. One is measuring how well an average post performs relative to the audience that saw it; the other is measuring how many people are on the app. Those are different questions with different answers.
Why the numbers diverge
Three things explain nearly all of it. First, customer mix: each company analyses posts published through its own product, so a tool used by solo operators and newsletter writers sees a different rhythm than one sold to enterprise brand teams running scheduled campaigns. Sprout's afternoon window and Buffer's morning window are partly just two different populations. Second, time zone handling. Buffer normalises everything so its times read as local, Sprout publishes in the audience's local time, and Hootsuite localises across 118 countries, but SocialPilot reports its core recommendations in Eastern time, which means its 8am is 8am in New York rather than 8am wherever your readers are. Third, the target metric, which is what produces the evening split described above.
X data is genuinely thinner than the other platforms'
This is worth saying plainly, because it changes how much weight the numbers deserve. Later, which publishes one of the most-cited Instagram timing studies, stopped supporting X altogether in August 2025. HeyOrca removed its X integration in April 2026 and pointed at the cost of X's API as the reason. Hootsuite no longer maintains a dedicated X posting-times article the way it does for Instagram and TikTok; its X guidance now lives inside a cross-platform page. Metricool's most recent dedicated X study was published in October 2024. Fewer scheduling tools connected to X means fewer posts flowing through the tools that publish these studies, so the X datasets are smaller and refreshed less often than their Instagram equivalents.
What survives across all five
Strip out the specifics and a stable core remains. Midweek wins everywhere: Tuesday, Wednesday and Thursday appear in the top tier of every one of the five datasets, with Wednesday named the single best day by both Buffer and Metricool. Weekday daytime beats overnight in all of them, and the pre-dawn hours are the one thing nobody defends, with Hootsuite naming anything before 5am the worst slot of the week. The weekend is weakest almost everywhere, with Sprout recommending no Saturday times at all and Buffer ranking Saturday its worst day. If you post midweek, during working hours, in your audience's local time, you are inside every study's recommended zone.
Find your own window in about ten minutes
Your account holds better data than any global average, and X's own analytics will show it. Pull your posts from the last couple of months, note the hour each went out, and look at impressions and engagement rate side by side rather than one or the other, because they peak at different times for exactly the reasons the studies disagree. Then test properly: pick two candidate windows, alternate between them for two or three weeks, and compare medians rather than averages so a single post that happened to get quoted by a large account does not decide the question. Five or six posts per window is the minimum before you believe anything. One breakout at 2am proves nothing.
Timing is worth more on X, and still less than the post
X rewards recency more than the recommendation-driven feeds do, so the hour you publish has a larger effect here than it does on Reels or TikTok. That is a real edge, but it is a small one, and it only decides between two posts that were already worth reading. The reason most accounts miss their window is not a bad hypothesis about the clock, it is that nothing was ready to publish. Work backwards from the window instead: record once, cut the clips and pull the quotable lines in one sitting, and schedule the week. FrameOS turns a long recording into a stack of captioned clips in a single pass, which is usually the difference between a schedule you keep and one you abandon by Thursday.
FAQ
What is the best time to post on X (Twitter)?
Weekday mornings, roughly 9 to 11am local time, Tuesday through Thursday, is the closest thing to a consensus. Buffer's analysis of 8.7 million posts puts the top slot at Tuesday 9am, Hootsuite recommends 9 to 11am Wednesday through Friday, and SocialPilot favours 8 to 11am on weekdays. Sprout Social is the outlier, preferring 12 to 6pm.
Is the evening a good time to post on X?
The studies disagree here more than anywhere else. Buffer found 6 to 11pm the weakest hours of every day, while Metricool's study of 2.1 million posts identified 9pm as the hour with the most connected users globally. Buffer measured engagement rate per post and Metricool measured audience availability, which is why both can be right.
Why do X posting-time studies disagree with each other?
Each company analyses posts published through its own product, so their customer bases differ. They also handle time zones differently, with Buffer, Sprout and Hootsuite reporting in local time while SocialPilot publishes in Eastern time. And they optimise for different outcomes, since engagement rate and total impressions do not peak at the same hour.
Is there less posting-time data for X than other platforms?
Yes, and it is worth accounting for. Later dropped X support in August 2025 and HeyOrca removed its integration in April 2026, citing API costs. Hootsuite folded its X guidance into a cross-platform page, and Metricool's dedicated X study dates from October 2024. Fewer tools connected to X means smaller, less frequently refreshed datasets.
Sources
- The Best Time to Post on Twitter/X in 2026: 8.7 Million Posts Analyzed · Buffer
- Best Times to Post on Twitter (X) in 2026 [Updated] · Sprout Social
- Best time to post on social media (by platform) · Hootsuite
- When is the Best Time to Post on Twitter/X in 2026? [Based on 50,000+ Twitter Accounts] · SocialPilot
- 2024 X/Twitter Study: Data and Trends to Grow on X in 2025 · Metricool
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