<p>What day does Winter Break begin and end for undergraduates? I am confused because the packet I received says winter break begins 12/20, but winter session begins 12/26. Then classes resume on 1/17. What are winter sessions? Will my winter break go from 12/20-12/26, 12/20-1/17, or something else? Please help.</p>
<p>Winter session is optional, like summer sessions, so you will leave after your last final and return as soon as you can/spring session begins. So basically 12/20 - 01/17 (or 19, i forget which day classes resume.)</p>
<p>Can you stay on campus during Thanksgiving/Spring break?</p>
<p>Cornell</a> University - Academics - Academic Calendar</p>
<p>This is the main calendar and will always be right.</p>
<p>You can stay on campus for Thanksgiving and Spring breaks but the dining halls close.</p>