[megaloman]

Код:

@Echo Off                                                                                                 
	Set /A Shut=2*60*60
	Set /A D1=20181021, D2=20181030

	FOR /F "tokens=2 delims==." %%d in ('WMIC OS GET LOCALDATETIME /VALUE') DO SET "tNow=%%d"
	Set /A tNow=%tNow:~0,8%

	If %tNow% LSS %D1% Echo Nothing to do &Exit /B 0
	If %tNow% GTR %D2% Echo Nothing to do &Exit /B 0

	shutdown /s /t %Shut%
Exit /B 1

То же самое, но по другому организовано сравнение (аналог логического и)

Код:

@Echo Off                                                                                                 
	Set /A Shut=2*60*60
	Set /A D1=20181021, D2=20181030

	FOR /F "tokens=2 delims==." %%d in ('WMIC OS GET LOCALDATETIME /VALUE') DO SET "tNow=%%d"
	Set /A tNow=%tNow:~0,8%

	If %D1% LEQ %tNow% If %tNow% LEQ %D2% (shutdown /s /t %Shut% &Exit /B 1)

	Echo Nothing to do 
Exit /B 0