Best Time to Post on Instagram: What 4 Studies Say, and How to Find Yours
There is no single best time to post on Instagram. Sprout Social points to weekday afternoons (Tuesday 1–7 p.m., Wednesday 12–9 p.m.). Buffer's top slot is Thursday at 9 a.m. Later's overall best time is 5 a.m., inside the early-morning window Hootsuite calls least effective. Start with one slot, then test it against your followers' most active times.
One study says 5 a.m. Another says early mornings are among the least effective times to post. Both are real studies, each built on more than a million posts. If you've been setting an alarm to post at dawn, or skipping weekends because a chart said so, it's worth seeing where that advice comes from. This guide puts four widely cited studies side by side (Google's AI Overview for this search is built on Sprout's), shows where they clash, explains why, and walks you through finding your own best time in Instagram Insights.
Captain Hook has no posting-time data of its own, so every number below comes from the study it's credited to.
What the four studies say
| Study (date) | Data | Period | What "best" measures | Top times and days | Link |
|---|---|---|---|---|---|
| Sprout Social (updated Mar 31, 2026) | Nearly 2 billion engagements, ~307,000 profiles, 30,000+ Sprout customers | Nov 27, 2025 – Feb 27, 2026 | Engagement | Mon 2–4 p.m., Tue 1–7 p.m., Wed 12–9 p.m., Thu 12–2 p.m. Best days: Tuesday and Wednesday. Worst: weekends | sproutsocial.com |
| Buffer (Sep 23, 2026) | 9.6 million posts from 200,000+ accounts | Jan 2024 – Dec 2025 | Median engagement rate: (likes + comments + shares + saves) ÷ followers | Thursday 9 a.m., Wednesday 12 p.m., Wednesday 6 p.m. Best day: Wednesday. Worst: Friday and Saturday | buffer.com |
| Hootsuite, with Critical Truth (Jul 14, 2026) | 1 million+ social posts from businesses of all sizes | Not stated | Engagement | A window for every day (see the next table). Least effective: before 8 a.m. and after 10 p.m. | hootsuite.com |
| Later (updated Apr 21, 2026) | 6 million+ feed posts (images, videos, carousels, Reels), plus 975,000+ Reels | Jan – Oct 2024 | Engagement rate | 5 a.m. overall. Best day: Monday. Worst: Saturday | later.com |
Download the studies-compared sheet (CSV). It has every row above plus the TikTok studies, each with its source link, so you can check a number before you repeat it. Free, no sign-up.
Three contradictions stand out:
- Early morning. Later's overall best time is 5 a.m. Hootsuite says posts before 8 a.m. are among the least effective.
- Weekends. Sprout, Buffer and Later all put a weekend day (or Friday) at the bottom. Hootsuite still names Saturday 11 a.m. and 5 p.m. and Sunday 12–3 p.m.
- Best day. Sprout says Tuesday and Wednesday. Buffer says Wednesday. Later says Monday.
Day by day: all four studies
| Day | Sprout | Buffer | Hootsuite | Later |
|---|---|---|---|---|
| Monday | 2–4 p.m. | 7 p.m. | 3–9 p.m. | 5 a.m., 11 p.m. |
| Tuesday | 1–7 p.m. | 7 p.m. | 5–8 a.m., 3–7 p.m. | 5 a.m. |
| Wednesday | 12–9 p.m. | 12 p.m., 6 p.m., 8 a.m. | 5 p.m. | 3 a.m. |
| Thursday | 12–2 p.m. | 9 a.m., 8 a.m., 7 a.m. | 4–5 p.m. | 4–5 a.m. |
| Friday | No clear peak | 10 p.m., 9 p.m. | 4 p.m. | 3–6 a.m. |
| Saturday | No clear peak | 9 p.m., 10 p.m., 8 p.m. | 11 a.m., 5 p.m. | 5 a.m. |
| Sunday | No clear peak | 9 p.m., 10 p.m., 8 p.m. | 12–3 p.m. | 12 a.m., 5 a.m., 11 p.m. |
Three of the four overlap on weekday afternoons and early evenings. Wednesday around 5–6 p.m. sits inside Sprout's window, matches Buffer's 6 p.m. and is next to Hootsuite's 5 p.m. Later is the outlier: every slot it names falls between 11 p.m. and 6 a.m. If you want a first test slot that three studies back, start with Wednesday around 5–6 p.m.
Why the studies disagree
Don't blame time zones: all four convert their results to your audience's local time. The real differences are these:
- Whose accounts. Sprout studies its customers' profiles, Buffer posts published through Buffer, and Hootsuite posts from businesses. Later's page doesn't say whose posts its data team analysed. None of these is a random slice of Instagram.
- What "best" means. Buffer publishes its formula: median engagement rate, with followers as the denominator. Later uses engagement rate without saying what it divides by. Sprout and Hootsuite report engagement without a formula on the page. A slot can win on one measure and lose on another: a median rate counts every post once, while a total of engagements leans toward the hours when big accounts post.
- When the data was collected. Later's posts are from January to October 2024. Buffer's run from 2024 through 2025. Sprout's cover three months, from late November 2025 to late February 2026. Hootsuite doesn't give a period.
- Which formats. Later mixes images, videos, carousels and Reels. Sprout says its data showed timing doesn't change by format.
None of this makes any study wrong. Each describes its own sample, and your account is a sample of one.
Is the best time different for Reels?
Probably not by much: two of the four studies say timing doesn't change with format. Sprout says its data shows the algorithm prioritizes user activity times over content format. Buffer says the same peak times apply across content types, with small format-specific notes. Later is the exception: it names 12 a.m. as the best time for Reels and Monday as the best day.
How to find your own best time to post on Instagram
Instagram already shows you when your followers are online. Start there, then test.
1. Check when your followers are most active
Instagram's follower insights need a public account and at least 100 followers (Instagram Help Center). You don't have to switch to a professional account: public personal accounts get Your dashboard. Then:
- Go to your profile.
- Professional account: tap Professional dashboard, then Insights below For professionals. Personal account: tap Your dashboard (Instagram Help Center).
- Tap Total followers to open your follower insights. They include growth, top locations, age range and the times your followers are most active on Instagram.
Insights let you pick a preset or custom timeframe within the past 90 days, so you can read a full month instead of one unusual week.
2. Pick two or three slots to test
Take your followers' busiest hour and add one or two slots from the studies above. A useful pair is Sprout's Tuesday or Wednesday afternoon and Later's 5 a.m.: they contradict each other, so your results will show which fits your audience.
3. Test for two to four weeks
Post at each slot in rotation, at least three posts per slot, and keep the rest as steady as you can: similar topics, format and length. Log every post in a sheet like this one:
| Date | Slot | Format | Topic | Views after 7 days | Interactions | Avg watch time (Reels, s) |
|---|---|---|---|---|---|---|
Instagram counts likes, comments, saves and shares as interactions (Instagram Help Center). Compare posts at the same age, for example 7 days after posting. This is a practice method, not an Instagram rule.
4. Decide on medians, not on one post
One Reel that takes off at 10 p.m. doesn't make 10 p.m. your slot. Compare the median of each slot. If the gap between slots is small, timing probably isn't your lever, and you can post when it suits you.
When timing isn't the problem
Posting time can't make people keep watching a Reel they would scroll past at any hour. Check these first:
- Reels get almost no views: start with Reels not getting views.
- Views arrive, but people leave early: compare your average watch time with your own last 10 Reels.
- One Reel stalled and you want to know why: Video Analyzer reads up to 4 screenshots of that Reel's Instagram analytics and explains in plain language what held it back. No video upload.
Posting on TikTok too? The best time to post on TikTok studies disagree in different ways.
Plan your posting times
Chart your test slots on the free Content Calendar. Each entry can carry a time, so your plan sits next to the hooks and scripts you're about to post. It's free, works without an account and is a planning board only: nothing posts automatically, and entries are saved in this browser.
FAQ
What is the best day to post on Instagram in 2026?
The studies disagree. Sprout Social names Tuesday and Wednesday, Buffer names Wednesday, and Later names Monday. All three put a weekend day near the bottom. Test your top two days for two to four weeks and compare the median views of each.
Is 10:30 PM too late to post on Instagram?
Not necessarily. Hootsuite lists late nights after 10 p.m. among the least effective times, but Buffer's top slots for Friday to Sunday are 9 to 10 p.m., and Later names 11 p.m. on Monday and Sunday. Check your followers' most active times in Insights; if they're online late, test it.
Is the best time to post Reels different?
Sprout Social says its data shows timing doesn't change by format, and Buffer says the same peak times apply across content types. Later is the exception: it names 12 a.m. as the best time for Reels and Monday as the best day. Start by testing Reels on the same slots as your other posts.
How do I see when my followers are most active on Instagram?
You need a public account with at least 100 followers. Open your profile, go to your dashboard (Professional dashboard, then Insights, on a professional account), and open your followers insights. They show the times your followers are most active, along with growth, locations and age range.
Does posting time matter on Instagram?
The four studies above show that some slots average more engagement than others in their own samples. None of them shows that a slot will change the result of a given post on your account. Test it: if your best and worst slots end up close after a few weeks, put your effort into the post instead.