Mine

@echo off
setlocal
for /f "tokens=2-4 delims=/ " %%a in ('date /t') do (set currday=%%a) && (set curryear=%%c) && (currmonth=%%b)
set /a currweek=%currday%/7
set /a currweek=%currweek%+1
set weekyear=%curryear%-%currmonth%-%currweek%
md c:\another\path\%currdate%
move c:\some\path\*.tar.gz c:\another\path\%currdate%
endlocal