Best time to post for audiences in the US, UK and Europe (and how to find your own)

Search for the best time to post on Instagram in the UK, or on TikTok in the US, and you will find confident answers that contradict each other: early morning, lunchtime, mid-afternoon, late evening, weekdays, weekends. Most of these come from scheduling-tool vendors averaging millions of accounts that have nothing in common with yours. A Brooklyn bakery, a Lyon ceramics studio and a Berlin fitness coach do not share a commute, a lunch break or a bedtime, so a single global hour cannot serve all three.

This guide takes a different route. It does not hand you a magic slot. Instead it explains the clocks your audience actually lives on, the weeks each year when the transatlantic gap quietly changes, where Instagram, TikTok and YouTube show you when your own followers are online, and a four-week test that turns those signals into a schedule you can defend with your own numbers. The worked examples are illustrations, not customer stories.

Why published best-time charts disagree

Generic posting-time studies usually pool data from many industries and countries, then convert everything into one reference zone. That hides the detail that matters to you. If half your audience sits in Manchester and the other half in Chicago, a chart built on a global average describes neither group. The studies also measure different things: some count likes, some count reach, some count comments, and each platform changes its ranking systems over time.

Treat any published hour as a hypothesis to test, never as a rule. The only evidence that settles the question for your account is your own follower activity data plus a few weeks of deliberate experiments, both of which are covered below.

The time zones your audience lives in

The contiguous United States spans four zones, usually written by their generic names (ET, CT, MT, PT) because each one switches between a standard and a daylight version during the year ^[5]. Arizona mostly stays on Mountain Standard Time all year, which is why Phoenix and Salt Lake City show different clocks in summer ^[5]. Europe has four main zones of its own, and the UK, Ireland and Portugal share the westernmost one ^[4].

In practice, London to New York is five hours for most of the year, London to Los Angeles is eight, and Paris or Berlin sit one hour ahead of London ^[4]. A UK lunchtime is therefore breakfast on the US East Coast and the middle of the night in California, which is the core problem any transatlantic schedule has to solve.

The clock-change mismatch between the US, UK and EU

The US and Europe both move their clocks, but not on the same weekends. In the US, clocks go forward at 2 a.m. local time on the second Sunday of March and back on the first Sunday of November ^[1]. The UK moves forward on the last Sunday of March and back on the last Sunday of October ^[2], and EU law sets the same last-Sunday rule for member states, with both changes happening at 1 a.m. GMT ^[3].

The result is a short window twice a year when the gap between London and New York shrinks from five hours to four. In spring it lasts two or three weeks, between the US switch and the UK and EU switch; in autumn it lasts one week, between the last Sunday of October and the first Sunday of November. Altogether, summer time in Europe is 21 or 28 days shorter than in the US and Canada, depending on the year ^[4].

Where each app shows when your audience is online

Before testing anything, read what the platforms already know about your audience. Each one exposes an activity chart in a slightly different place, and each needs a minimum amount of data before it appears.

• Instagram: public accounts get free insights, and the follower section shows growth, top locations, age range and the times followers are most active on Instagram once the account reaches the minimum audience size the help page specifies ^[6]. You can choose preset or custom timeframes within the past 90 days ^[6].
• TikTok: analytics live in TikTok Studio for personal accounts and Business Suite for business accounts, and a most-active-times view shows the hours and days your viewers or followers are scrolling ^[11]. Location sits alongside gender and age in the audience demographics ^[11].
• YouTube: in YouTube Studio, the Audience tab includes a report called When your viewers are on YouTube. It covers the last 28 days and shows when your viewers are online across all of YouTube, not just on your channel; the same help page lists Top geographies by watch time ^[8].

Two habits make these charts far more useful. First, confirm which time zone the chart is drawn in before converting anything, because the help pages do not always state it. Second, read the location breakdown next to the activity chart: if most of your audience turns out to be in the UK while your customers are in the US, timing is not your biggest problem. Our plain-English guide to Instagram and TikTok analytics walks through those location reports in detail.

A method for a split US and UK (or EU) audience

1. Write down the share of your audience in each zone from the location report, rounded to the nearest ten percent.
2. Mark each group's likely free time in its own local clock: before work, lunch, the commute home and the evening.
3. Convert those windows into one reference zone (your own) and look for overlaps.
4. Give the larger group your main slot and use overlaps, Stories or a second post for the smaller group.
5. Repeat the conversion on the clock-change weekends listed above.

Illustration: a London illustrator with a US East Coast following

Imagine Hana, an illustrator in London whose location report shows roughly half her audience in the UK and about 40 percent on the US East Coast. A 1 p.m. London post reaches British lunch breaks but arrives at 8 a.m. in New York, during the commute. A 7 p.m. London post catches UK evenings and New York at 2 p.m., a quieter work hour. Her test plan alternates a lunchtime UK slot with an 8 p.m. slot (3 p.m. in New York), keeps Stories for US evenings, and during the March and late-October gap weeks moves the second slot an hour earlier on her own clock to keep the same US time.

Illustration: a Lisbon surf school with UK, German and US students

Now picture a surf school in Lisbon. Portugal shares the UK clock, Germany is one hour ahead and New York is five hours behind ^[4]. A 6 p.m. Lisbon post lands at 6 p.m. in Manchester, 7 p.m. in Munich and 1 p.m. in New York, a single slot that is reasonable for all three groups. Because the booking decision is often made at the weekend, the school also tests Saturday and Sunday mornings against weekday evenings.

A four-week posting-time test

Change one variable at a time. Keep the format, length and topic mix roughly constant, and judge slots on rates rather than raw counts, for example interactions per account reached or average watch time, so that one unusually strong post does not decide the test.

Short-form video can keep collecting views for days, so wait at least 48 to 72 hours before logging a post's numbers, and compare like with like. If you post on several networks, our comparison of TikTok, Reels and Shorts helps you decide which one deserves the test first.

Scheduling tools that handle the time-zone maths

• Instagram: public accounts can schedule Reels, photos and carousels in the app, up to 25 posts a day and up to 30 days in advance; product tags, collaborative posts, sponsored posts and fundraisers are not compatible with scheduling yet ^[7].
• TikTok: the web scheduler on tiktok.com lets you plan a video from 15 minutes up to 10 days ahead, defaults to your computer's time zone, and does not let you edit a scheduled post, so you delete and re-upload to change it ^[10].
• YouTube: YouTube Studio lets you pick a date, time and time zone when scheduling; note that the Published on date shown on the watch page follows Pacific time, so a video scheduled for early morning in London can display the previous day ^[9].