Upon conducting thorough research and analyzing the code, it has been determined that the current format is not supported. While considering submitting a pull request to the repository, I came across this particular statement in the documentation: here. As a result, I have opted against investing additional effort due to the following message:
⚠️ New features based on v0.18.x are currently of low priority and may not undergo review or integration. The emphasis is primarily on addressing bug fixes.
It's worth noting that Material-ui will be releasing a new version, v1.0.0, which includes an updated datepicker component. Perhaps integrating this new format as a configurable option would be beneficial for future use.