365 days and 6 hours.
Explanation
The Earth moves around the Sun in an elliptical orbit. This motion is termed as revolution, and its duration defines the length of a year.Analysis:
- The Earth takes approximately 365 days and 6 hours to complete one full revolution around the Sun.
- For practical purposes and calendar convenience, a standard year is counted as 365 days.
- The remaining 6 hours are accumulated over four years to form one complete day (24 hours).
- This surplus day is added to the month of February every fourth year, resulting in a Leap Year with 366 days.
Key Takeaway: The actual duration of Earth's revolution is 365 days and 6 hours, which is why a Leap Year is introduced every four years to adjust the calendar.