apang

@echo off
set n=5
set t=%time: =0%
set /a s=n+(1%t:~,2%-100)*3600+(1%t:~3,2%-100)*60+1%t:~6,2%-100
set /a hh=s/3600%%24+100,mm=s%%3600/60+100,ss=s%%60+100
set "newTime=%hh:~1%:%mm:~1%:%ss:~1%"
echo,%newTime%
pause
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