The Global Accessible Awareness Day this year is on the 21st of May.
The purpose of this day is to get people talking, thinking and learning about digital (web, software, mobile, etc.) accessibility and users with different disabilities. It’s an international event where organizations or anyone is invited to hold an in-person or a virtual event to mark GAAD and invite the public to take part?
http://www.globalaccessibilityawarenessday.org
As well as the In-Person events there will be many free online accessibility courses and free webinars available.