Planetary Science

How long does it take for earth to complete one revolution around the sun?

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September 30, 2016 12:39PM

The tropical year (from vernal equinox to vernal equinox) is approx 365.2422 days or 365 days, 5 hours, 48 minutes, 46 seconds

The sidereal year (to complete an orbit back to where the earth started) is approx 365.2564 days or 365 days, 6 hours, 9 minutes, 13 seconds

Our calendar is based on the tropical year so that the seasons stay in the same place.
365 days, 5 hours, 46 min, & 48 sec.
A complete orbit of the Earth around the Sun occurs every 365.256363004.
A year