= Tropical year
{wiki=Tropical_year}
A tropical year, also known as a solar year, is the time it takes for the Earth to complete one full orbit around the Sun, measured from one vernal equinox to the next. This duration is approximately 365.242190 days, which is why our calendar year is typically 365 days, with a leap year occurring every four years to accommodate for the extra approximately 0.242190 days. The tropical year is significant because it aligns the calendar year with the seasons.
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