November 1, 2015: Open Enrollment starts — first day you can enroll in a 2016 Marketplace plan
January 1, 2016: First date 2016 coverage can start
January 31, 2016: 2016 Open Enrollment ends
If you don’t enroll in a 2016 plan by January 31, 2016, you can’t enroll in a health insurance plan for 2016 unless you qualify for a Special Enrollment Period.