結果 : how many hours in a day exactly
1:41

How many hours exactly is a day?

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2:51

Why There are 24 Hours in a Day

Mr Cognito
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5:47

Who decides how long a second is? - John Kitching

TED-Ed
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3:04

Why Some Days Aren’t 24 Hours

minutephysics
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6:30

Daylight Saving Time Explained

CGP Grey
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6:46

This is Why All Billionaires Wake Up EXACTLY at 4:00 AM

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2:55

How much sleep do you really need? | Sleeping with Science, a TED series

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0:39

Why exactly 24 hours in a day and not 20, 30 or 50?

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6:39

It's that time of year! Girl Scout Cookies are here | Good Day on WTOL 11

WTOL11
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5:20

Earth Science - Understanding Time Zones

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282,422 回視聴 - 7 年前

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2:14

Day and Night – The Rotation of the Earth

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1:31

Jocko Willink: How To Wake Up Early

CNBC Make It
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14:06

4000 HOURS: How many views EXACTLY make 4000 hours for YouTube Monetization? | Flo Chinyere

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0:31

Why Earth's Day is Exactly 24 Hours?

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187 回視聴 - 1 年前
4:20

Is Time an Illusion? - The Science of Time Explained

Science Time
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1:19

How many hours of sleep do you need?

Mount Sinai Health System
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0:36

Exact How Many Hours In One Day | Episode 3 | #earthfacts #earthplanet #earth #facts #shorts

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3:32

When do clock hands overlap? - Numberphile

Numberphile
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56:46

PBS News Hour full episode, Jan. 3, 2025

PBS NewsHour
26,310 回視聴 - 3 時間前
0:29

How many hours are there in a day?/ general knowledge/ gk for kids

Little star
12,244 回視聴 - 2 年前