Leap-year corrections in the calendar are necessary to account for the:
A) fact that the actual rotation time of Earth with respect to the stars is not exactly 24 hours.
B) wobble of Earth's axis.
C) slow drift in the direction of Earth's spin axis.
D) fact that one year is not exactly 365 days.

Question

Quizplus · Accepted Answer

Leap-year corrections are necessary because one year is not exactly 365 days. The Earth's orbit around the sun actually takes about 365.24 days. In order to keep the calendar year aligned with the astronomical year, an extra day is added to the calendar every four years (in the form of February 29th) to account for this discrepancy.

Leap-Year Corrections in the Calendar Are Necessary to Account for The