B Evidence Grade B Graded accuracy verified by the review judge Safe to Cite Current

22%

22% -- 7 day retention uplift for Engineering education YouTube channels (videos uploaded at 2 a.m. UTC vs 2 p.m. UTC) (2026-01)

2026-01  · n=17  · Outlier (OutlierKit)

Uploading videos at 2 a.m. UTC resulted in a 22% higher 7-day retention rate compared to uploading at 2 p.m. UTC across 17 engineering education YouTube channels.

  • Small sample size of 17 channels
  • Specific to engineering education niche
  • Single-month study window (January 2026)
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Attribution: Outlier (OutlierKit) View source
Lighthouse Research Team
Last verified:  ·  How we verify data →
Source verified Evidence graded
Value
22%
Unit
Percentage
Data Vintage
2026-01
Entity
Engineering education YouTube channels (videos uploaded at 2 a.m. UTC vs 2 p.m. UTC)
Sample Size
17
Evidence Quality
B
Strong, reliable evidence

Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.

61/100 confidence

Single source - not yet corroborated

Score breakdown
Extraction
95
Source Trust
60
Citation Chain
20
Independence
30
Methodology
60
Freshness
95
Source
Outlier (OutlierKit) Primary Tier A
https://www.outlier.so/blog/analyze-watch-time-by-region ↗
Confidence: 59/100 Vintage: 2026-01 Channel: Deep Crawl
Source Article
How to Analyze Watch Time by Region
How to Analyze Watch Time by Region Want to grow your YouTube channel? Start by analyzing your watch time by region. This data not only shows where your audience is but also helps you tailor content, optimize revenue, and improve engagement. Here's what you need to know: - Why Watch Time Matters: Yo…
Original Research
Outlier (OutlierKit) · Original study ↗
Methodology

Study of 17 engineering education channels comparing 2 a.m. UTC vs 2 p.m. UTC upload times; the early slot captured APAC morning viewers and European late-night viewers. Small sample and single-month window; study published within a vendor blog without named research firm.

Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Engineering education YouTube channels (videos uploaded at 2 a.m. UTC vs 2 p.m. UTC): 22% 7 day retention uplift. Source: Outlier (OutlierKit) (2026-01). Via Lighthouse Intelligence -- https://lighthousedata.io/data/upload-timing-7day-retention-engineering-2026
HTML Embed
<blockquote cite="https://lighthousedata.io/data/upload-timing-7day-retention-engineering-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>22%</strong> -- 7 day retention uplift for Engineering education YouTube channels (videos uploaded at 2 a.m. UTC vs 2 p.m. UTC)<br><small>Source: Outlier (OutlierKit) (2026-01) · <a href="https://lighthousedata.io/data/upload-timing-7day-retention-engineering-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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