Search for the best time to post on Instagram and you get a confident answer on every page. Wednesday at noon. Monday at 5 AM. Weekday evenings. The trouble is that the big studies behind those answers disagree with each other, and none of them studied your followers.
This post puts the four biggest 2026 studies side by side, explains why they land on different hours, and then walks through how a small business finds its own best hours from its own numbers. It takes about four weeks of posting and ten minutes a week of reading.
The short answer
If you have no data of your own yet, start here:
- Post on a weekday. Three of the four studies put their best day between Monday and Wednesday. Two of them name the weekend as the weakest.
- Pick two windows to test: one in the early afternoon (about 12 to 3 PM) and one in the evening (about 6 to 9 PM), in your followers' local time.
- Post at each window at least twice, then keep the one that gets more likes and comments than your usual.
The rest of this post is the reasoning behind those three steps.
What the big studies say
Each study measured something slightly different, on a different set of accounts, over a different period. Here is what each one found, in its own words and on its own page.
Sprout Social (updated March 31, 2026) analyzed nearly 2 billion engagements across about 307,000 profiles, from November 27, 2025 to February 27, 2026. Its best times are Mondays 2 to 4 PM, Tuesdays 1 to 7 PM, Wednesdays 12 to 9 PM and Thursdays 12 to 2 PM, in local time. Tuesday and Wednesday peak highest. Friday has no clear peak, and the weekend is the weakest.
Hootsuite (July 14, 2026) analyzed over 1 million posts, localized across 118 countries. It favors early mornings and early evenings early in the week, with Monday, Tuesday and Thursday as the strongest days. Unlike Sprout, it names weekend slots: Saturday at 11 AM and 5 PM, Sunday 12 to 3 PM.
Later (updated April 21, 2026) analyzed over 6 million posts, Reels included, published from January to October 2024. Its answer is the odd one out: the small hours. Monday is its best day, with the highest average engagement for posts published between 12 AM and 6 AM, and posts published between 3 and 6 AM beat the average on every day of the week.
Buffer (updated September 23, 2026) analyzed 9.6 million posts from more than 200,000 accounts, from January 2024 to December 2025. Wednesday is its best day and Friday and Saturday its weakest. Its top hours are mostly in the evening: it says 6 to 11 PM gives the strongest engagement on every weekday except Thursday, when 9 AM leads.
Here are the four answers for each day of the week, in local time:
| Day | Sprout Social | Hootsuite | Later | Buffer |
|---|---|---|---|---|
| Monday | 2-4 PM | 3-9 PM | 5 AM, 11 PM | 7 PM |
| Tuesday | 1-7 PM | 5-8 AM, 3-7 PM | 5 AM | 7 PM |
| Wednesday | 12-9 PM, 11 PM | 5 PM | 3 AM | 12 PM |
| Thursday | 12-2 PM | 4-5 PM | 4-5 AM | 9 AM |
| Friday | No clear peak | About 4 PM | 3-6 AM | 10 PM |
| Saturday | Weakest | 11 AM, 5 PM | 5 AM | 9 PM |
| Sunday | Weak | 12-3 PM | 12 AM, 5 AM, 11 PM | 9 PM |
Read down any column and it makes sense. Read across any row and the four studies share almost nothing. On Wednesday alone the recommendations run from 3 AM to 11 PM.
Sprout Social's own answer also shows how uneven the week is. Count the hours in its peak window for each day and the middle of the week holds almost all of them:
| Label | Value |
|---|---|
| Mon | 2 hours |
| Tue | 6 hours |
| Wed | 10 hours |
| Thu | 2 hours |
| Fri | 0 hours |
| Sat | 0 hours |
| Sun | 0 hours |
Wednesday counts 10 hours: noon to 9 PM, plus the 11 PM hour Sprout also lists. Friday, Saturday and Sunday have no peak hours in its study.
Why their answers differ
Four teams, millions of posts each, four different answers. None of them is wrong. They measure different things.
Different accounts
Each study counts a different set of accounts: 307,000 profiles for Sprout Social, more than 200,000 for Buffer. A bank and a bakery do not have the same followers, and the followers do not open Instagram at the same hours. Hootsuite shows this inside its own study: it lists hospitality at 10 AM to 3 PM on Monday and Tuesday, and retail at 7 to 11 AM on Monday.
Different questions
"When do posts get the most engagement" and "when should you publish" sound like the same question. They are not. A post published at 5 AM sits at the top of the feed when people wake up and collects likes all morning. That is one likely reason Later's small hours win: the post is early for the whole day. A post published at 7 PM competes with everyone else who read that 7 PM is the best time.
Different periods
Sprout's window runs from late November to late February, so it includes the holidays and the darkest months of the year in the northern hemisphere. Later's data is from 2024. Buffer's covers two full years. Seasons change when people scroll, so a winter study and a two-year study can disagree and both be right.
Averages hide the spread
Every study turns millions of accounts into one line per day. Your account is a few thousand followers in one or two time zones. The average of everyone is a starting point for you, and nothing more.
Why one good hour is worth finding
Engagement per post is small on Instagram, and it is shrinking. The 2026 Social Media Industry Benchmark Report from Quid (published March 5, 2026, the report formerly from Rival IQ) puts the median Instagram engagement rate at 0.30% per post, down from 0.36% the year before. That is 3 interactions for every 1,000 followers.
The same report says the median brand posts on Instagram 3.7 times a week. With three or four posts a week, you cannot afford to put one of them out at an hour when your followers are asleep or at work. And with so few posts, you have to be patient with your own data, which brings us to the part that matters.
How to find your own best hours
The studies give you a first guess. Your own insights give you the answer. Here is a four-week routine for a small account.
Step 1: Check when your followers are online
Instagram shows this for professional accounts: open your insights in the Instagram app and look at your followers, where it lists the days and hours they are most active. In Postfjord the same numbers are under Analytics, Each channel, as When your followers are online. Write down the two busiest blocks.
This tells you when people are on the app. It does not tell you when they engage with you, so treat it as the shortlist, not the answer.
Step 2: Set your time zone once
Every time in this post is local. If your studio is in Austin and most followers are in Austin, use Central Time. If you sell online across the US, your followers span several time zones: check where most of them live in your follower insights and use that zone. Set it in your scheduler so a 7 PM post goes out at 7 PM for the people you want to reach.
Step 3: Test two windows for four weeks
Pick one window from Step 1 and one from the studies, for example Tuesday at 1 PM and Wednesday at 7 PM. Post at both, every week, for four weeks. That is eight posts, four at each time.
Keep the posts comparable. Put a Reel in each slot, or a carousel in each, so the format does not decide the result. Keep the same kinds of topics in both.
Step 4: Compare against your usual
Do not compare raw numbers. Compare each slot with your own average. Say your posts average 40 likes and comments. If the Tuesday posts average 60, that slot is 1.5 times your usual. If the Wednesday posts average 36, they are 0.9 times. Keep Tuesday, move Wednesday to a new time and test again.
Step 5: Look again every quarter
People change their habits with the school year, the season and daylight saving time. Check the numbers every three months, or when a slot that used to work stops working.
A worked example
Here is how that looks for a yoga studio in Austin that posts three times a week. The numbers are an example, not data from a real studio.
- Week 1: Instagram shows followers are most active from 12 to 1 PM and 7 to 9 PM on weekdays. The studio picks Tuesday at 12:30 PM and Wednesday at 7:30 PM, and keeps its Saturday class post as it is.
- Weeks 1 to 4: a Reel with a short class clip at 12:30 PM on Tuesdays, a carousel with a pose tip at 7:30 PM on Wednesdays.
- Week 5: the owner compares. Tuesday lunch posts get twice the studio's usual likes and comments. Wednesday evening posts get about the usual.
- Next four weeks: keep Tuesday at 12:30 PM, test Thursday at 7 AM before the morning class instead of Wednesday evening.
At no point did the owner need to know what Sprout Social or Buffer said. The studies helped pick the first two slots to try.
How Postfjord finds your best times
Doing Step 4 in a spreadsheet works. It is also the step most people drop by week three. Postfjord's Analytics does it every night for every connected channel.
Here is what it does, in order:
- Reads your posts. Each night Postfjord reads your newest 100 posts on Instagram and Facebook, including posts you published outside Postfjord.
- Groups them by weekday and hour, in your workspace time zone. A post at 12:30 PM on a Tuesday lands in the Tuesday 12 PM slot.
- Scores each post by its likes and comments. A comment counts as three likes, because it takes more effort than a tap.
- Drops thin slots. A time only counts once you have posted at it at least twice, so one lucky post cannot win.
- Measures each slot against the channel's usual. A slot where posts get 1.5 times the channel's average engagement shows as "1.5 times your usual". Each channel is measured against its own average, so a large Instagram account does not decide the times for a small Facebook Page.
- Shows the top three times under Best times to post, for the range you picked: 7, 30, 90 or 365 days.
Pick a channel under Each channel and you also see when its followers are online, and likes and comments by weekday, hour, topic and kind of post. That gives you Steps 1 and 4 on one screen. Then schedule the next posts at those times in the calendar, and the comparison updates by itself as they go out.
If you use an AI app, you can also ask it directly. Connect ChatGPT, Claude or another app through Postfjord's MCP server, and ask "what are my best times to post this month?". It reads the same best times and can schedule the next week's drafts at them.
The full description of every number is on the Analytics help page.
FAQ
What is the best time to post on Instagram in 2026?
The four big studies disagree. Sprout Social says weekday afternoons, strongest on Tuesday and Wednesday. Hootsuite says early mornings and early evenings early in the week. Later says 3 to 6 AM. Buffer says weekday evenings, with Wednesday as the best day. Start with a weekday afternoon and a weekday evening in your followers' time zone, and let your own numbers decide after four weeks.
What is the best day to post on Instagram?
Sprout Social names Tuesday and Wednesday, Buffer names Wednesday, and Later names Monday. Hootsuite names Monday, Tuesday and Thursday. Sprout Social and Buffer both name the weekend or Friday and Saturday as the weakest days.
Which time zone should I use?
Your followers' time zone. All four studies report local time. If they are spread across several zones, use the one where most of them live. In Postfjord, set the workspace time zone under Settings, and the best times show in that zone.
How many posts do I need before my own best times mean anything?
At least two posts at the same weekday and hour, which is the minimum Postfjord uses. Four or more per slot gives a steadier answer. At three posts a week, that is about four weeks of testing two slots.
Do Reels and carousels have different best times?
They can. Later studied Reels as part of its data, and Postfjord shows likes and comments by kind of post for each channel. When you test times, keep the format the same in each slot so the format does not decide the result.
Does posting at the best time matter more than what I post?
Timing is one part. It helps a post reach the people who are online, and it cannot fix a post they do not care about. Postfjord's Analytics also sorts your posts by topic, so you can see which kinds of posts get more likes and comments on each channel.