Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi Awadh,
The input date format is related with the SharePoint's region settings.
For instance, this Microsoft List you are working on is stored in a specific SharePoint site. Then go to that site and click on site settings > Regional Settings > Change the region to the country which use dd/mm/yyyy for time format. E.g United Kingdom.
So it will allow you to input in dd/mm/yyyy format
However, unfortunately, there is no method to change the year directly in the date picker.
Regards,
Alex Chen