How long is a day on Venus? Urban Astronomer Posted on 5 December, 2011 by Allen Versfeld 5800 hours, or 242 earth days. A year on Venus is 220 earth days, so on Venus a day is actually longer than a year! Comments? Questions? Why not mail me at [email protected] Liked it? Take a second to support Allen Versfeld on Patreon!Share this:TweetEmailWhatsAppLike this:Like Loading... Related