If a month, year or date is disabled, aria-disabled="true" should be on the active element to indicate the disabled state.

Now there is only a 'disabled' class selector. There is no aria-disabled="true" which is resulting in a low contrast issue according to pre-launch report in Google Play Console.

<td class="datepicker-cell datepicker-small-cell datepicker-day-cell disabled" aria-label="Sat, 11 Nov 2023 23:00:00 GMT" aria-selected="false"><div class="datepicker-cell-content datepicker-small-cell-content">12</div></td>

Should be

<td class="datepicker-cell datepicker-small-cell datepicker-day-cell disabled" aria-label="Sat, 11 Nov 2023 23:00:00 GMT" aria-selected="false"><div class="datepicker-cell-content datepicker-small-cell-content" aria-disabled="true">12</div></td>