Works perfectly in version 13 too
copy file or directory - eg:
Germany.................to....................20241130_Germany
nnoremap <silent> <f8> :copy <c-r>=system('date +%Y%m%d')<cr>_<c-x>c<cr>
Move file or directory - eg:
Germany.................to....................20241130_Germany
nnoremap <silent> <f9> :move <c-r>=system('date +%Y%m%d')<cr>_<c-x>c<cr>
thank you xaizek