<P> On July 27 , 2010 , the conference unveiled a new logo and announced that the Pac - 10 would be renamed the Pac - 12 when Utah and Colorado formally joined in July 2011 . On October 21 , the Pac - 12 announced that its football competition would be split into two divisions -- a North Division comprising the Pacific Northwest and Bay Area schools , and a South Division comprising the Mountain Time Zone and Southern California schools . On July 1 , 2011 , the Pac - 12 assumed its current alignment when both Colorado and Utah officially joined as full members . </P>
<P> On July 27 , 2010 , the conference unveiled a new logo and announced that the Pac - 10 would be renamed the Pac - 12 when Utah and Colorado formally joined in July 2011 . On October 21 , the Pac - 12 announced that its football competition would be split into two divisions -- a North Division comprising the Pacific Northwest and Bay Area schools , and a South Division comprising the Mountain Time Zone and Southern California schools . On July 1 , 2011 , the Pac - 12 assumed its current alignment when both Colorado and Utah officially joined as full members . </P>
when did pac 10 change to pac 12
when did pac 10 change to pac 12
July 2011
July 2011