' It was already known that Venus has the longest day - the time the planet takes for a single rotation on its axis - of any planet in our solar system, though there were discrepancies among previous estimates. The study found that a single Venusian rotation takes 243.0226 Earth days.

Which planet has longest day and shortest year?

Which planet has the longest day and the shortest year? The answer to both questions is Mercury. It orbits the Sun every 88 days, and a Solar Day on Mercury lasts for two orbits which is 176 days.

Which planet has one day longer than a year?

A day on Venus is longer than a year

It takes Venus longer to rotate once on its axis than to complete one orbit of the Sun. That's 243 Earth days to rotate once - the longest rotation of any planet in the Solar System - and only 224.7 Earth days to complete one orbit of the Sun.