how long does it take the earth to complete one revolution
Confidence votes 75. One complete revolution of the Earth around the sun takes 365.25 days. A day is 24 hours, which is the time it takes the earth to revolve on it's axis plus the time it takes to catch up with the sun, which has moved 1/365.25 of one rotation away from where it was the day before.t takes approximately 365.25 earth days of 24 hours each to complete one orbit around the Sun. On calendars, we just state 365 days, and make up for the 0.25 days as an ext â¦ ra day every four years. This is called the 'leap year', where we have 366 days instead of 365, with an extra day in February. Answered.