Three major studies currently answer this question, and they disagree by as much as twelve hours, which is the most useful fact on this page. The chart below draws all three on one track, named and dated, so you can see where they agree (midweek), where they do not (nearly everywhere else), and why your own analytics outrank any of them.
Peak windows, three studies, one track
Hours are your audience's local time, which is how each study reports. Tap a study to isolate it. Where the bands stack, the studies agree; where they sit twelve hours apart, that is the honest state of the research.
Checked against each study's own page · Aug 26, 2026
Beyond one number
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The overlap is real but narrow. Wednesday appears in every study’s top tier. Midweek beats the edges of the week, and weekends are the weakest ground in all three datasets, which fits a professional network read mostly on work rhythms. That is the whole consensus, and it converts to advice in one line: post Tuesday to Thursday unless your own data says otherwise.
The divergence is just as instructive. Sprout Social’s two billion engagements point at 11am to 4pm. Buffer’s 4.8 million posts point at 3pm to 8pm, and their own note says the peak moved later since their 2025 analysis. Hootsuite’s million posts point at early morning. Three serious datasets, three different clocks, because each is averaging a different crowd. Any tool that shows you a single confident heatmap is showing you one of these studies with the sources filed off, or worse, no study at all.
You are already running it. Every post you publish is a data point about your audience specifically: when they saw it, when they answered. A few weeks of consistent midweek posting, read honestly in your analytics, tells you more about your best hour than all three studies combined, because your buyers are not an average. The engagement rate calculator on this site gives each post a benchmarked read, and once the pattern is visible, timing stops being a research question and becomes a habit.
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