Windows Batch File Run a Command at Specific Time

cron.bat

@ECHO OFF
:: SET Window Title (optional)
TITLE Your Cron Title

:: Set First Execution times
:: Your commands will be executed between 09:00 and 09:30
SET loop1Start=15:00
SET loop1End=15:30

:: Set Second Execution times
:: Your commands will be executed between 15:00 and 15:30
SET loop2Start= 09:00
SET loop2End=09:30

:: Waiting for 30 minutes to begin loop (60*30=1800)
:BEGINLOOP
SET tm=%time:~0,5%
ECHO [%tm%] Waiting for next loop...
TIMEOUT /T 1800 > NUL
SET tm=%time:~0,5%
GOTO LOOP1

:: Checking first loop
:LOOP1
ECHO [%tm%] Checking Loop 1
IF %loop1End% GEQ %tm% (
    IF %loop1Start% LEQ %tm% (
        GOTO RUN
    ) ELSE (
        GOTO LOOP2
    )
) ELSE (
    GOTO LOOP2
)

:: Checking second loop
:LOOP2
ECHO [%tm%] Checking Loop 2
IF %loop2End% GEQ %tm% (
    IF %loop2Start% LEQ %tm% (
        GOTO RUN
    ) ELSE (
        GOTO BEGINLOOP
    )
) ELSE (
    GOTO BEGINLOOP
)

:: Running your scripts...
:RUN
ECHO [%tm%] Running...
:: Your codes here...
GOTO BEGINLOOP