If you still haven't made your website accessible to all, this Global Accessibility Awareness Day uses these modules to make your website more accessible.
United Nations has dedicated April 2nd of every year as World Autism Awareness Day to highlight and bring awareness to the challenges faced by people falling in the Autism spectrum world over.
World Wide Web Consortium(W3C) introduced Web Accessibility Initiative through WCAG. These guidelines helps sites to be sensitive to those with special needs.