How to create file with current date into folder with Windows cmd? [duplicate]
Well while this question is technically a different question, the answer is essentially the same as that other question:
Echo "%DATE:~-4%.%DATE:~4,2%.%DATE:~7,2%_%TIME:~0,2%.%TIME:~3,2%.%TIME:~6,2%
Since you specified that it must work with any regional settings though, that answer does not completely meet your needs. As far as I know, there is no way to meet your needs natively within cmd.exe. I would highly recommend doing this in powershell instead of cmd.