You will need a screen reader to test these changes. Try to test on both NVDA and JAWS. Create a course, and add the Calendar block. Create some events in the current month. View the page, and activate your screen reader. Move the focus to the previous month link in the calendar block (e.g. by pressing Tab until it is focused) Confirm : The screen reader should say "{Month name} previous month" where month name is the month it will take you to. Before fix : The screen reader said "previous month" with no month name. Move the focus to the next month link in the calendar block. Confirm : The screen reader should say "{Month name} next month" where month name is the month it will take you to. Before fix : The screen reader said "next month" with no month name. Activate the next month link Confirm : The next month loads and the screen reader announces "{Month name} {year}" corresponding to the month that is now displayed. Before fix : The next month loads but the screen reader provides no feedback. Activate the previous month link to return to the current month Confirm : The current month loads and the screen reader announces "{Month name} {year}" corresponding to the month that is now displayed. Before fix : The current month loads but the screen reader provides no feedback. Move the focus to a day containing events Confirm : A popover is shown containing the day's events, and screen reader reads the list of days, before reading the link to the calendar for the day. Before fix : The popover is shown, but the screen reader does not read its contents, only the link.