When was Dune published?

Long before Timothy Chalament was tasked with carrying on the legacy of House Atreides, Dune was a breakout science fiction novel.
When was it first published?
<section><h2>Dune</h2><p></p></section><section><h2><h2>When was the original <em>Dune</em> novel published?</h2></h2><p></p></section><section><h2><h2>You let the Harkonnens take control of the spice. Now you have to see Sting in his underwear.</h2></h2><p></p></section><section><h3><h2></h2><h2>You scored some melange and rode a worm. Good job.</h2></h3><p></p></section>