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NHK科学文化部 engagement report

@nhk_kabun - 342K followers on X

Measured over 59 original posts from a 30-day window, last computed on October 8, 2026.

Engagement

Middle of its size range
Per follower
0.02%
of 342K followers
Per impression
0.639%
11K views on a typical post
Reach
3.15%
of its followers see a post
Typical post
69
interactions (median)
Saved
0.046%
5 bookmarks on a typical post
Posting rate
2/day
active 67% of days
Peak time
13:00 UTC
Thursday

A typical post picks up 69 interactions against 342K followers, an engagement rate of 0.02%. Measured over 59 original posts, its engagement rate beats 44% of 20,444 tracked accounts of a similar size, which puts it in the middle of its size range rather than at either end. Posts are seen about 11K times each, and 0.639% of those impressions turn into an interaction. That is about 3.16% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 2 posts a day over the last 30 days, with activity on roughly 67% of days. Most posts go out around 13:00 UTC, and Thursday is the busiest day of the week. Of the 59 posts sampled, 100% link out. The account's strongest tracked post pulled 1.3K interactions, about 19x its own typical post.

Measured over 59 original posts from a 30-day window, last computed on October 8, 2026.

Compared with accounts its own size

NHK科学文化部's engagement rate beats 44% of the tracked X accounts closest to it in follower count (20,444 accounts, accounts of similar size (decile 10 of 10)). A percentile is spread evenly by construction, so 50 really is the middle of that group and 90 really is its top tenth.

On engagement per impression rather than per follower it beats 36% of the same group. When those two numbers disagree, the gap is about how far its posts travel rather than how people react to them.

Where this sits in the catalog

At 0.02%, NHK科学文化部 sits above the 10th percentile of the 205,374 accounts in this comparison. That places it in the bottom 25% band, which runs below 0.024%.

p100.004%
p250.024%
p50 (median)0.143%
p750.678%
p902.55%
p9982.4%
Engagement rate as a share of followers, across the 205,374 accounts we have scanned enough to measure. The axis is logarithmic, because the top and bottom of this population are about 22,897 times apart and a linear axis would flatten everything below the median into a single point.
Show the percentile table
Engagement rate percentiles
PercentileEngagement rate
10th percentile0.004%
25th percentile0.024%
50th percentile0.143%
75th percentile0.678%
90th percentile2.55%
99th percentile82.4%

This ruler is the whole measured catalog, not a size-matched group: it shows where the raw rate falls across every account we can measure, all of which are large. For a like-for-like comparison, read the size-band percentile above instead. See how the bands are built

Posting timing

This account posts most often around 13:00 UTC, and Thursday is its busiest day of the week. The bars below are the catalog-wide pattern, with this account's own busiest slot marked. They do not show how this account performs at each hour: we keep one aggregate per account, not one per hour, so that measurement does not exist in our data.

Engagement by hour posted, UTCTwenty-four bars, one per UTC hour. Each bar shows how posts published in that hour compare with their own authors' median engagement. Bars above the centre line ran higher than the median, bars below ran lower. A marker flags Busiest hour: 13:00 UTC.
0003060912151821
Above the authors' own mediansBelowScale: plus or minus 111%Busiest hour: 13:00 UTC
Show engagement by hour posted, utc as a table
Engagement by hour posted, UTC
Hour (UTC)Vs author medianPosts
00:00 UTC-1%89K
01:00 UTC-2%90K
02:00 UTC-3%88K
03:00 UTC-4%94K
04:00 UTC-5%76K
05:00 UTC-4%75K
06:00 UTC-5%86K
07:00 UTC-5%93K
08:00 UTC-4%108K
09:00 UTC-4%124K
10:00 UTC-3%129K
11:00 UTC-3%141K
12:00 UTC-3%154K
13:00 UTC-3%167K
14:00 UTC-4%173K
15:00 UTC-2%176K
16:00 UTC-3%171K
17:00 UTC-3%159K
18:00 UTC-2%149K
19:00 UTC-2%141K
20:00 UTC-1%131K
21:00 UTC0%116K
22:00 UTC-2%100K
23:00 UTC-1%90K
Engagement by day of weekSeven bars, one per weekday, Sunday first. Each bar shows how posts published on that day compare with their own authors' median engagement. Bars above the centre line ran higher than the median, bars below ran lower. A marker flags Busiest day: Thursday.
SunMonTueWedThuFriSat
Above the authors' own mediansBelowScale: plus or minus 111%Busiest day: Thursday
Show engagement by day of week as a table
Engagement by day of week
DayVs author medianPosts
Sunday+5%393K
Monday+1%483K
Tuesday-2%520K
Wednesday-3%472K
Thursday-2%430K
Friday-3%447K
Saturday+2%393K
See what moves engagement across the whole catalogWhat counts as a good engagement rate at this size

Formats this account uses

Its own posting mix on the left, and what each of those formats does across every account we track on the right. Only formats where the effect clears our publish test appear here, so an empty row is a format we could not measure rather than one that does nothing.

This account's posting mix compared with catalog-wide effects
FormatThis accountCatalog effect95% intervalAccounts behind it
Image or video0% of posts+111%+108% to +115%34K
Outbound link100% of posts-41%-42% to -40%32K
Typical length--3%-3% to -2%54K
  • 0% of this account's sampled posts carry an image or video. Across the catalog, posts with an image or video run 111% above the same accounts' other posts.
  • 100% of its posts carry a link off X. Across the catalog, posts with an outbound link run 41% below the same accounts' other posts, so a large share of this account's output sits in the weakest bucket we measure.
  • Its average post runs 112 characters, which falls in the 80 - 180 characters band. Across the catalog, posts of 80 to 180 characters run 3% below the same accounts' other posts.

These are catalog-wide differences applied to this account's own posting mix, not a measurement of how each format performs for this account specifically. We keep one median per account, not one per format per account, so the second thing is not something this data can tell you.

Best tweets

  • Sep 2, 202619x their median

    学歴などをテーマに配信しているユーチューバーが公開した動画の中で、福島大学の放射能の研究をやゆするような発言があったことについて、大学の学長が「学生や教職員が尊厳を傷つけられることがあってはならない」などとする声明を発表しました https://t.co/daF6J5jVX2

    96530081344K viewsView on X
  • Sep 11, 202612x their median

    全国の博物館で収蔵庫に入りきらない資料の扱いが問題となり、文化庁では資料の収集と管理の考え方の策定を進めていますが、これに対し、学芸員や研究者などで作る団体が意見書を提出したと発表しました。 https://t.co/FE82EdrmtU

    5532520524K viewsView on X
  • Sep 6, 202611x their median

    戦場で“人を殺す”こととは。 ベネチア国際映画祭、コンペティション部門に出品されている塚本晋也監督の「ネルソンさん、あなたは人を殺しましたか?」の特集記事はこちらです。 https://t.co/AUzE5LTPem

    4672570118K viewsView on X
  • Sep 10, 20269.1x their median

    日本の探査機「はやぶさ2」が探査した小惑星「リュウグウ」は、およそ45億6530万年前の太陽系初期の天体の残骸とみられることがわかったと、北海道大学などの研究グループが発表しました。太陽系の天体が作られた過程を解明する手がかりになるとしています。 https://t.co/3WZDZFTV3D

    44017301718K viewsView on X
  • Oct 1, 20268.4x their median

    NHKの自然番組の撮影の際に見つかったカイミジンコと呼ばれるごく小さな甲殻類の仲間が新種と確認され、調査を行った研究者が番組のキャラクター「ヒゲじい」にちなんだ名前をつけたと発表しました https://t.co/0mq7ocyuK0

    4141580518K viewsView on X
  • Sep 28, 20268.2x their median

    東北大学は、10月から新たな研究拠点を設け、ノーベル化学賞受賞者の田中耕一さんが国際卓越教授に就任して教育研究活動を行うと発表しました。 https://t.co/0n5zY9u2Qp

    40912922445K viewsView on X
  • Sep 1, 20267.2x their median

    「戦争が始まれば、人は殺される側だけではなく殺す側にもなりうる。被害者の目線だけでは、半分しか戦争の恐ろしさを描けない」 ベネチア国際映画祭のコンペティション部門に出品される「ネルソンさん、あなたは人を殺しましたか?」、塚本晋也監督のインタビューです。 https://t.co/AUzE5LTPem

    3301622413K viewsView on X
  • Sep 30, 20267.0x their median

    人気声優の津田健次郎さんが「生成AIで自身の声を無断で模倣された動画が投稿された」として、動画共有アプリ「TikTok」の運営会社を訴えた裁判。 東京地裁は「パブリシティ権」の侵害にあたるとする初めての判断を示しました https://t.co/SxaCKm3HUD

    3381402411K viewsView on X
  • Sep 11, 20266.6x their median

    東京大学に関連する一般財団法人の元事務局長が法人の資金およそ9000万円を流用していた問題で、元事務局長1人に権限が集中するなどガバナンスに問題があったとして、この法人は2026年度末の解散を前提に、業務の整理を進めることになりました。 https://t.co/OQ5M7VvnXu

    26316831863K viewsView on X
  • Aug 19, 20266.5x their median

    火星の衛星「フォボス」から表面の砂を地球に持ち帰る日本の探査機「MMX」は、ことし10月20日にH3ロケットで打ち上げられる方向で調整が進められていることが関係者への取材でわかりました。 https://t.co/414cVpWZ26

    31411811326K viewsView on X

Ranked by total interactions across everything we have tracked for this account, which is a longer history than the 30-day window the rates above use. The multiple compares each post to this account's own median.

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Reading these numbers

A typical post picks up 69 interactions against 342K followers, an engagement rate of 0.02%. Measured over 59 original posts, its engagement rate beats 44% of 20,444 tracked accounts of a similar size, which puts it in the middle of its size range rather than at either end. Posts are seen about 11K times each, and 0.639% of those impressions turn into an interaction. That is about 3.16% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 2 posts a day over the last 30 days, with activity on roughly 67% of days. Most posts go out around 13:00 UTC, and Thursday is the busiest day of the week. Of the 59 posts sampled, 100% link out. The account's strongest tracked post pulled 1.3K interactions, about 19x its own typical post.

What is NHK科学文化部's engagement rate on X?
NHK科学文化部 (@nhk_kabun) has an engagement rate of 0.02%, based on the median interactions across 59 original posts from the last 30 days against 342,269 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
Is that a good engagement rate?
At 0.02%, NHK科学文化部 sits above the 10th percentile of the 205,374 accounts in this comparison. Those comparison accounts are all large ones, because our scanning cadence is weighted towards big accounts, so this is a ranking among peers of similar scale rather than a ranking across X.
Does @nhk_kabun have real engagement?
Its engagement rate beats 44% of the tracked X accounts closest to it in follower count (20,444 accounts), which puts it in the middle of its size range group. Ranking inside a size band matters because engagement rate falls as accounts grow, so a raw rate would mostly re-measure the follower count. It is a starting point for a look at follower quality, not a verdict on it.
When does @nhk_kabun post?
Most posts go out around 13:00 UTC, and Thursday is its busiest day, at roughly 2 posts per day across the measured window.

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