Alternative date combobox grid date picker example for ARIA APG

I created a variation of the previous date picker combox gird cexampel, that does not use a button element in the gird cell.
The new version has good compatibility with VoicweOver and NVDA, but the previous example has better compatibility with JAWS.
Would appreciate any feedback on the two examples.

Alternative date picker combobox grid example that uses just the gridcell to represent a day:
https://raw.githack.com/w3c/aria-practices/issue34-date-picker-examples-no-button/examples/datepicker/datepicker.html

Previous date picker combobx grid example that uses a button in a gridcell to represent a day.
https://raw.githack.com/w3c/aria-practices/issue34-date-picker-examples/examples/datepicker/datepicker.html


Jon Gunderson, Ph.D., CPWA
Coordinator of Accessible IT Group
University of Illinois at Urbana/Champaign
1207 S. Oak Street
Champaign, IL 61820

Phone: (217) 244-5870
E-mail: jongund@illinois.edu<mailto:jongund@illinois.edu>
www: https://go.illinois.edu/jongund