Playlist · Cognito
Cognito US - High School Science
Total watch time
1h 34m
at 1× speed · exactly 1 hour, 34 minutes at 1×
The shape of the course
Each column is one video, to scale
WatchedTo watch
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Your plan
Plan to finish
About 2 days at an hour a day
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At one hour a day, every day, this playlist takes about 2 days. Turn on JavaScript to plan around your week.
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Google Calendar: in the left sidebar, + beside Other calendars → Import → pick the downloaded .ics → choose a calendar → Import. The same menu's From URL subscribes to the feed instead.
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Videos (17)
1h 34m in total · tick what you've watched
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For your README
Embed a badge
Show the watch time in a README or course description — it links back here and updates itself
[](https://playlistduration.com/playlist/PLidqqIGKox7XkSOZllPMO-zOl_QT359iI)<a href="https://playlistduration.com/playlist/PLidqqIGKox7XkSOZllPMO-zOl_QT359iI"><img src="https://playlistduration.com/badge/playlist/PLidqqIGKox7XkSOZllPMO-zOl_QT359iI.svg" alt="Watch time: 1h 34m · 17 videos" width="203" height="20"></a>Add ?speed=1.5 to the image URL for the time at that speed, ?label=Course to change the left text, or ?style=flat-square for square corners.
Want the numbers themselves? GET https://playlistduration.com/api/v1/playlist/PLidqqIGKox7XkSOZllPMO-zOl_QT359iI returns them as JSON — free, no key. API docs →
Data from the YouTube Data API as of 2026-10-23 (cached). Private or deleted videos are excluded from totals.