for /f "tokens=1 delims=:" %%i in ("%time%") do set /a d=%%i
set /a a=%time:~3,2%
if "%a:~0,1%%"=="0" set a=%a:~1%
if %a% == 57 goto one
if %a% == 58 goto two
if %a% == 59 goto three
set /a a=%a%+3
:start
at %d%:%a% /interactive c:\1.vbs
goto new
:one
set /a a=00 && goto end
:two
set /a a=01 && goto end
:three
set /a a=02 && goto end
:end
set /a d=%d%+1
goto start