Hi there, @user20175 
Good question!
Recently, we’ve conducted extensive automated accessibility testing of all our widgets (including Event Calendar) using tools such as WAVE, axe DevTools, and Lighthouse, and have addressed all issues identified through these assessments.
Here you can see the improvements made for the Event Calendar app:
I’d also like to note that we are committed to maintaining high accessibility standards and continuously work to improve our widgets’ compliance with WCAG guidelines. We strive to ensure they are as accessible as possible.
If you have any questions left or any assistance is needed, we’re always here to help 