Multiple choice general knowledge sports

What is the exact duration of a day on earth?

  1. 23 Hours 56 Mins 3.1 Sec

  2. 24 Hours 4 Mins 6.9 Sec

  3. 23 Hours 56 Mins 4.1 Sec

  4. 24 Hours
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A sidereal day (Earth's exact rotation period relative to fixed stars) is 23 hours, 56 minutes, and 4.1 seconds, not 24 hours. The 24-hour solar day is the time between successive noons when the sun reaches its highest point. The difference of about 4 minutes is due to Earth's orbital motion around the sun.

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