Check Date Format Input into Excel Column with VBA code ("DD/MM/YYYY" format)

Hi ikboy,
Thanks for your reply. but, it's not working. could you please help me to find the solution by improving initial code. It's working with some scenarios. but, it's not validated with "2019/09/21", "2019-08-23", "2/08/018" and "2/9/2018".