@echo off
::created by baoping
::QQ:360565687
::取得年月日
set YE=%date:~0,4%
set MO=%date:~5,2%
set DA=%date:~8,2%
::设置提前天数
set DG=1
::判断是否闰年
set/a vY1=%YE% %% 400
set/a vY2=%YE% %% 4
set/a vY3=%YE% %% 100
if %vY1%==0 (set var=true) else (if %vY2%==0 (if %vY3%==0 (set var=false) else (set var=true)) else (set var=false))
::判断日期
set LY=%YE%
set LM=%MO%
if %MO:~0,1%==0 (set MO=%MO:~1,1%)
if %DA:~0,1%==0 (set DA=%DA:~1,1%)
if %DA% GTR %DG% (set/a LD=%DA%-%DG%) else (
if %MO%==1 (set/a LY=%YE%-1) & (set/a LM=12+%MO%-1) & (set/a LD=31+%DA%-%DG%) else (
set/a LM=%MO%-1
if %MO%==3 (if %var%==false (set/a LD=28+%DA%-%DG%) else (set/a LD=29+%DA%-%DG%))
for %%a in (2 4 6 8 9 11) do (if "%MO%"=="%%a" (set/a LD=31+%DA%-%DG%))
for %%b in (5 7 8 10 12) do (if "%MO%"=="%%b" (set/a LD=30+%DA%-%DG%))))
if %LM% LSS 10 set LM=0%LM:~-1%
if %LD% LSS 10 set LD=0%LD:~-1%
echo %LY%%LM%%LD%
pause
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