<p>I don't see the test dates being mentioned on Columbia website. Does anyone have an idea?</p>
<p>If you are applying early decision, then the last SAT test date is November. If you are applying Regular Decision, then it should be either December or January.</p>
<p>actually on one of the webpages it says “You may take standardized tests as late as November for Early Decision and January for Regular Decision.”</p>