<p>I believe this year they are on April 12th and April 21st (if that page is indeed up to date)</p>
<p>Source: [url=<a href=“http://admissions.duke.edu/jump/campus/visiting_tours.html]Duke”>http://admissions.duke.edu/jump/campus/visiting_tours.html]Duke</a> University Admissions: Tours & Information Sessions<a href=“third%20bullet%20under%20Pratt%20Engineering%20Tours”>/url</a></p>