@echo off
for /f "tokens=1-4 delims=/ " %%a in ('date /t') do (set weekday=%%a& set month=%%b& set day=%%c& set year=%%d)
for /f "tokens=1-3 delims=: " %%e in ('time /t') do (set hour=%%e& set minute=%%f& set AMPM=%%g)
7za a -mx=9 -mmt=on Source_Backup\%year%-%month%-%day%-%AMPM%-%hour%-%minute%-Archive.zip Source\* -r