cls

$code=@'
    using System;
    using System.Runtime.InteropServices;
    public static class WinApi{
        public struct FILETIME {
            public uint dwLowDateTime;
            public uint dwHighDateTime;
        };
        public struct SYSTEMTIME {
            public short wYear;
            public short wMonth;
            public short wDayOfWeek;
            public short wDay;
            public short wHour;
            public short wMinute;
            public short wSecond;
            public short wMilliseconds;
        };
        [DllImport("kernel32.dll")]
        public static extern bool DosDateTimeToFileTime(short wFatDate, short wFatTime, ref FILETIME lpFileTime);
        [DllImport("kernel32.dll")]
        public static extern bool FileTimeToDosDateTime(ref FILETIME lpFileTime, ref short wFatDate, ref short wFatTime);
        [DllImport("kernel32.dll")]
        public static extern bool FileTimeToSystemTime(ref FILETIME lpFileTime,ref SYSTEMTIME lpSystemTime);
        [DllImport("kernel32.dll")]
        public static extern bool SystemTimeToFileTime(ref SYSTEMTIME lpSystemTime, ref FILETIME lpFileTime);
        [DllImport("kernel32.dll")]
        public static extern void GetLocalTime(ref SYSTEMTIME lpSystemTime);
    }
'@
Add-Type -TypeDefinition $code 

$st_file_time = New-Object 'WinApi+FILETIME'
$st_system_time = New-Object 'WinApi+SYSTEMTIME'
$wFatDate = New-Object 'uint16'
$wFatTime = New-Object 'uint16'
[WinApi]::GetLocalTime([ref]$st_system_time)
[WinApi]::SystemTimeToFileTime([ref]$st_system_time,[ref]$st_file_time)
[WinApi]::FileTimeToDosDateTime([ref]$st_file_time,[ref]$wFatDate,[ref]$wFatTime)

'当前时间 {0:d4}/{1:d2}/{2:d2} {3:d2}:{4:d2}:{5:d2}' -f $st_system_time.wYear,$st_system_time.wMonth,$st_system_time.wDay,$st_system_time.wHour,$st_system_time.wMinute,$st_system_time.wSecond
'MS-DOS wFatDate:{0:X4} wFatTime:{1:X4}' -f $wFatDate,$wFatTime
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$st_file_time = New-Object 'WinApi+FILETIME'
$st_system_time = New-Object 'WinApi+SYSTEMTIME'

$ms_dos_time = 0x5C8A688A

$wFatDate = $ms_dos_time -shr 16
$wFatTime = $ms_dos_time -band 0xffff
[WinApi]::DosDateTimeToFileTime($wFatDate,$wFatTime,[ref]$st_file_time)
[WinApi]::FileTimeToSystemTime([ref]$st_file_time,[ref]$st_system_time)

'MS-DOS wFatDate:{0:X4} wFatTime:{1:X4}' -f $wFatDate,$wFatTime
'系统时间 {0:d4}/{1:d2}/{2:d2} {3:d2}:{4:d2}:{5:d2}' -f $st_system_time.wYear,$st_system_time.wMonth,$st_system_time.wDay,$st_system_time.wHour,$st_system_time.wMinute,$st_system_time.wSecond
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cls

$ms_dos_time = 0x5C8A688A

$wFatDate = $ms_dos_time -shr 16
$wFatTime = $ms_dos_time -band 0xffff

$day = $wFatDate -band 0x1f
$month = ($wFatDate -shr 5) -band 0x0f
$year = (($wFatDate -shr 9) -band 0x7f)+1980
$second = ($wFatTime -band 0x1f)*2
$minute = ($wFatTime -shr 5) -band 0x3f
$hour = ($wFatTime -shr 11) -band 0x1f


'MS-DOS wFatDate:{0:X4} wFatTime:{1:X4}' -f $wFatDate,$wFatTime
'系统时间 {0:d4}/{1:d2}/{2:d2} {3:d2}:{4:d2}:{5:d2}' -f $year,$month,$day,$hour,$minute,$second
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