This batch file will create a folder named YYYYMMDD in the working directory.

Working Directory is the directory in which it resides, or a directory that has been dragged and dropped onto the BAT file.

@Echo off
:: Check WMIC is available
WMIC.EXE Alias /? >NUL 2>&1 || GOTO s_error

:: Use WMIC to retrieve date and time
FOR /F "skip=1 tokens=1-6" %%G IN ('WMIC Path Win32_LocalTime Get Day^,Hour^,Minute^,Month^,Second^,Year /Format:table') DO (
   IF "%%~L"=="" goto s_done
      Set _yyyy=%%L
      Set _mm=00%%J
      Set _dd=00%%G
      Set _hour=00%%H
      SET _minute=00%%I
)
:s_done

:: Pad digits with leading zeros
      Set _mm=%_mm:~-2%
      Set _dd=%_dd:~-2%
      Set _hour=%_hour:~-2%
      Set _minute=%_minute:~-2%

:: Display the date/time in ISO 8601 format:
Set _isodate=%_yyyy%%_mm%%_dd%
:: Echo %_isodate%
:: pause
mkdir "%cd%\%_isodate%"

GOTO:EOF

:s_error
Echo GetDate.cmd
Echo Displays date and time independent of OS Locale, Language or date format.
Echo Requires Windows XP Professional, Vista or Windows 7
Echo.
Echo Returns 6 environment variables containing isodate,Year,Month,Day,hour and minute.
Based on the sorted date code by Rob van der Woude.