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The Best Time to Post on Facebook

Facebook timing advice is usually a list of hours with no explanation of which audience it assumed, which makes it impossible to adapt. This guide derives the answer instead: what the largest published timing study actually measured, where Facebook's high-value audience lives, why Facebook's ranking forgives a mistimed post in a way Reddit never does, and the awkward fact that America and Britain only overlap for about four good hours a day. There is a free day-and-hour grid below so you can see any slot, and a plain recommendation at the end.

The quick answer: post Tuesday to Thursday, 12 to 3 PM US Eastern, which is 5 to 8 PM in Britain. That window sits inside the highest-engagement band in the largest published study and is also the widest stretch where the American and British audiences are both awake.

Avoid the weekend. Saturday and Sunday are the lowest-engagement days of the week, and Sunday has no reliable peak hour at all.

The day and hour grid in your own local time

Every cell is one hour of one day. Colour is how much of your chosen audience is awake at that hour, multiplied by the day-of-week engagement pattern from the Sprout study, so the darkest cell is always the best cell for whatever you picked. The grid reads your time zone from your browser and opens on the best slot for the American audience, on your clock. Switch the radio to "optimise for both" to recolour it for the hours that keep Britain in the room as well. Click any cell for the full readout. Everything runs in your browser and nothing is sent anywhere.

Interactive Facebook posting day and hour grid

Click any hour to see the audience split and the verdict for that slot.

  

What am I optimising for? (this recolours the grid)
 
Weakest Strongest

 

US audience awake0%
UK audience awake0%
Slot score0

 

How this is calculated. Cell colour is the share of your chosen audience that is awake at that hour, multiplied by a day-of-week weight taken from the published Sprout Social pattern (Monday to Thursday strongest, weekends weakest). Choosing "optimise for both" scores each slot on whichever of the two countries is doing worse, which is what stops the grid recommending an hour that is excellent for one side and useless for the other. The hourly curve is a typical waking and phone-checking pattern applied to each region's local time, not measured Facebook data, so treat the shape as reliable and the exact numbers as indicative. All conversions use real time-zone rules for today's date, so daylight saving is already accounted for.

Post Tuesday to Thursday, 12 to 3 PM US Eastern

Two independent lines of evidence point at the same window, which is why this recommendation is more confident than the equivalent one for Reddit.

A phone taking a photo, an arrow, and the same photo being pasted on a computer

Use Camera to Clipboard to post a photo inside the midday window

Knowing that 1 PM Eastern is the hour to aim at only helps if the post is finished when the hour arrives, and the part that is usually not finished is the picture, because it is still sitting on a phone. Camera to Clipboard, one of my own apps, is a phone camera that puts what it photographs straight onto your computer's clipboard.

Facebook is a slow burn, so the ranking forgives a late post

This is the structural difference that changes the whole answer, and it is why the best hour for Facebook is later in the day than the best hour for Reddit.

Reddit rewards you for posting when nobody else is. Facebook just rewards you for posting when everybody is.

A North American user is worth three times a European one

If your goal is app installs, sales or leads rather than vanity reach, the value of an impression varies enormously by geography, and it should shape which clock you optimise for.

America and Britain share only about four good hours a day

Five hours of separation sounds manageable until you overlay two waking curves. Reading in US Eastern time, here is what happens across the day.

Note that the American evening is genuinely excellent if you only care about America, and the Sprout data supports it: Tuesday and Wednesday stay strong through to 8 PM local. The midday recommendation is specifically the price of keeping Britain in the room.

Two phones, one recording and one replaying, joined by arrows into a hands-free loop

Use Repeat Recorder to rehearse the video you post at midday

Keeping Britain in the room costs you the American evening and leaves about four usable hours a day, which means a post has to be made before its window rather than during it. A short video of you talking is the kind of post most likely to still be unfinished when the hour arrives, because the words get rewritten between takes. Repeat Recorder, another of my own apps, records you and plays each take straight back without you touching the phone.

Everyone misreads the largest timing study by ignoring local time

Most published timing tables trace back to the same handful of studies. It is worth knowing what the biggest one measured, because one methodological detail changes how you should apply it.

Your industry moves the window by several hours

Industry variation in the same dataset is larger than the day-of-week variation, so if your category is listed here it should outrank the platform average.

Reddit and Facebook need two opposite posting strategies

Copying your Reddit schedule onto Facebook, or the reverse, quietly costs you reach.

Facebook and Reddit posting strategies compared across ranking behaviour, timing sensitivity and audience value
FactorFacebookRedditWhat it means for your schedule
Best US and UK window12 to 3 PM ET Tue to Thu12 to 2 PM ET Tue to ThuSame slot one post time serves both
Competition penalty for busy hoursNone no shared queueSevere shared new queueDiffers only Reddit rewards posting early
Content shelf lifeHours to days keeps resurfacing1 to 3 hours then decays outDiffers Facebook forgives a late post
Damage from posting at the wrong hourModerate slower, still seenSevere effectively invisiblePrioritise Reddit get that timing right first
Worst day of the weekSunday no reliable peakFriday PM weekends are flat but usableDiffers Reddit tolerates weekends better
US share of the audienceMinority 254M of 3.07B usersAbout half of all trafficDiffers Reddit is far more US-centric
Value gap, North America vs elsewhereAbout 3x Europe, 11x Asia-PacificAbout 4x international averageSame lesson optimise for the US clock
Being present after postingHelpful comments feed distributionCritical first hour decides rankDiffers block out the hour for Reddit

Sort by the last column to see where the two platforms agree and where they genuinely diverge.

The first hour matters on Facebook, just less than on Reddit

Facebook forgiving a mistimed post is not the same as Facebook ignoring timing. Early engagement is still the signal that decides how far a post travels.

A phone taking a photo, an arrow, and the same photo being pasted on a computer

Use Camera to Clipboard to answer a comment with a photo

Replying inside the first hour is one of the few free levers on this page, and the reply that settles a question is often a picture rather than a paragraph. The picture is nearly always on your phone while the comment box is open on your computer. Camera to Clipboard, another of my own apps, closes that gap in one step.

Your own Insights beat every published average

Everything above is a starting hypothesis. Facebook hands you the real answer for your specific audience for free, and it takes a few minutes to read.

Conclusion: the best time to post on Facebook, in one glance