Best time to post in Facebook groups

Timing studies come from social media tools that publish posts for their customers and measure how those posts do. In January 2024, alongside version 19.0 of its Graph API, Meta announced it would retire the Groups API, and on April 22, 2024 outside apps lost the ability to post to groups. Buffer, Hootsuite, Sprout Social and the rest still publish to Pages, but none can post into a group.

None of the three studies we read mentions groups. Sprout Social’s data, from late November 2025 to late February 2026, was collected well after that cut-off, so it holds no group posts sent through Sprout. Many times quoted online for groups are borrowed from studies like these; when a page gives a precise best time for groups, check where its data came from.

And groups vary. A buy-and-sell group for one town, a worldwide fan group and a private group for one school year have little in common beyond Facebook, and a study of brand accounts sees none of them.

Admins and moderators of a group with at least 50 members get Group insights. Among its engagement figures are charts of the most popular days and times, showing when members post, comment and react the most. Unlike any study, it describes your members.

• Post announcements and weekly threads just before the busiest hour on the popular times chart, so they are fresh when members arrive.
• Open recurring threads, such as introductions or a weekly promotion post, on the strongest day of the week.
• Have a moderator on hand at peak times, when new posts and comments come in fastest.
• Schedule posts for the peak from within Facebook: people who manage a group can set a post to go out later.

Tip: Under 50 members there are no insights. Use the member method below until the group grows, then compare what you noted with the charts.

1. Read the rules and pinned posts first. If promotion is only allowed in a weekly thread or on one day, that is your slot, whatever any study says.
2. Scroll back two or three weeks and note when the posts with the most comments went up. On a computer, hover over a post’s time to see the exact date and hour; Facebook shows it in your own time zone, so the hours you note are ones you can post at.
3. Watch the admins’ routine. A weekly thread, a live session or an announcement day can draw members in at the same time every week.
4. Post shortly before the busiest stretch you found, and stay for the first hour to answer comments.

Post approval adds a delay. In a group that reviews posts first, yours waits until an admin or moderator approves it, so the moment you press Post is not the moment members see it. Aiming for a morning slot? Submit the evening before, or ask the admins when they usually review.

The studies’ disagreement is useful here: it hands you genuine alternatives to try rather than one borrowed answer. Buffer’s top weekday slots are mostly mornings, Sprout Social’s peaks run from 12 p.m. into the evening midweek, and Dash Social’s best hour is 9 p.m.

All three studies give times local to the audience. In a group for one town, that is simply your clock. In an international group, trust the popular times chart or the timestamps on busy posts over any study.

Tip: Judge each test by comments rather than reactions, since conversation is what most groups are for.

Since April 2024 there has been no official way for an outside tool to post into groups, so apps that promise to post to dozens of groups at once can’t be using Meta’s API to do it. Identical posts dropped into many groups within minutes also look like spam to members and admins, and Facebook can limit accounts that post that way. Space your posts out, rewrite each one for its group, and follow each group’s rules on promotion.