Set Windows local time from website header using CURL, need this because NTP is blocked cant do auto sync, use task scheduler to do this batch file recurringly

settimefromcurl.bat

cls
echo off
rem Get date from google.com header and put it into file
@curl -s -I www.google.com | findstr "Date:" > datetime.txt

rem set variabel timenow as that file content, its in GMT so need to convert it into local timezone
@set /p timenow=< datetime.txt
@rem echo Jam GMT: %timenow%

rem Get the time only 
@FOR /F "TOKENS=5,6* DELIMS= " %%G IN ("%timenow%") DO SET "timegmt=%%H"
@echo Jam GMT : %timegmt%

rem parsing the hour to set to local timezone, change + 7 to yours
@set "jam=%timegmt:~0,2%"

rem remove leading 0 if exists, make sure add in task scheduler at time when add or minus your timezone, it doesnt exceed 24
@set jam=%jam:0=%

@set /a jam = %jam% + 7

rem get the minute and second of the time
@set "menit=%timegmt:~3,2%"
@set "detik=%timegmt:~6,2%"

rem set the time using string combined from the hour:minute:time
echo Jam WIB : %jam%:%menit%:%detik%
@time %jam%:%menit%:%detik%
echo ...
echo Time Set