If you never exited Canada (and if the 4/6 provision of C-24 has not come into force by then), you may send your application on October 27 with 1096 days of physical presence. If you have traveled, use the online residence calculator to determine when you'll be eligible. Check the useful links in this post: http://www.canadavisa.com/canada-immigration-discussion-board/useful-links-tips-t229091.0.html.