Who decides how long a second is? - John Kitching
How long is 1 day exactly?
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Day: 6 of trying to get 10 seconds exactly
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Did you know how exactly long a day on Earth
Day 4 trying to get exactly 10 seconds #foryou #timer
Day one of trying to get 3 seconds exactly #deadpool #challenge
Day 3 of trying to get to stop at exactly 10 seconds #subscribe #timing #stopwatch #fypシ
Why a Day isn't Exactly 24 Hours Long? #day #facts #sun #solarsystem #factshorts #shorts
1 day isn't exactly 24 hours long! #explained #animation #shorts
Day 1 of Trying To Stop On 10 Seconds Exactly! #earth #foryou #fy #fyp #10second #seconds #challenge
Day 2 of trying to get exactly 10 seconds
Day four of trying to get exactly 10 seconds #music #soul #love #song #live #fnclip #funnyimages #fu
Can you stop a clock at EXACTLY five seconds? ⏰ #shorts
Day 1 of trying to get exactly 10 seconds #10second #stopwatch #timer #shortvideo #short #shorts
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