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