The morning check
Buffer and Hootsuite both put X's best window at 9:00 to 11:00, when people check the news and their feeds at the start of the working day. Buffer's top 3 slots are Tuesday at 9:00 and Wednesday at 9:00 and 10:00.
Sprout finds the most engagement from 12:00 to 18:00, and Metricool a peak at 21:00. X moves quickly, so a post you want seen twice can go out once in the morning and again later.
Midweek, and Wednesday in every study
Wednesday is named by all 4 studies and Tuesday by 3. Buffer's weakest days are Friday and Saturday, and Metricool advises against Sunday.
Three studies, three times of day
X splits the studies more sharply than any platform but TikTok: morning for Buffer and Hootsuite, afternoon for Sprout, evening for Metricool. Only the days agree.
Start at 9:00, where 2 studies overlap, and give your second post of the day an afternoon slot. After a month, your own numbers will say which one to keep.
- BufferBest daysTue, WedBest hours9:00 to 11:00Top slotTuesday 9:00
- Sprout SocialBest daysTue to ThuBest hours12:00 to 18:00Top slotNone named
- HootsuiteBest daysWed to FriBest hours9:00 to 11:00Top slotNone named
- MetricoolBest daysTue, WedBest hours21:00Top slotNone named
Sources and method
Every window in this guide is what a study's own page says, read on the date beside it. Where a study's overview and its page for one platform disagree, we used the platform page, which is newer and narrower.
The charts count how many of the studies name each hour or day. They show where the studies agree, not how much engagement an hour gets: no study publishes its raw numbers.
Buffer, The Best Time to Post on Social Media in 2026
52 million posts from over 200,000 accounts, 2024 and 2025. Median engagement rate by the hour a post went out. Read 8 November 2026.
Sprout Social, Best times to post on social media in 2026
Nearly 2 billion engagements across about 307,000 profiles. When engagement happens, hour by hour. Read 8 November 2026.
Hootsuite, Best time to post on social media
Over 1 million posts in 118 countries, with Critical Truth. Engagement by the hour a post went out. Read 8 November 2026.
Metricool, Best time to post on social networks
Per-network studies of professional accounts, such as 24.4 million Instagram posts from 375,118 accounts. Read 8 November 2026.