Multiple choice general knowledge science & technology

How exactly long is a year?

  1. 366.2564 days

  2. 365.2564 days

  3. 365 days

  4. 366 days
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A sidereal year (Earth's actual orbital period) is approximately 365.2564 days. This differs from the calendar year of 365 days due to the precise measurement of Earth's orbit around the Sun.

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