Update-TypeData -TypeName 'System.DateTime' -MemberName '時(shí)辰' -MemberType 'ScriptProperty' -Value {
  $timeAliasArray='子丑寅卯辰巳午未申酉戌亥'
  $hour = $this.Hour
  [int]$index=0
  if($hour -eq 22){ $index=11 }
  else{
    $index=[math]::Floor( ( $hour+1 ) % 23 / 2 )
     }
 return $timeAliasArray[ $index ] + "時(shí)"
}

PS> (get-date).時(shí)辰
子時(shí)
PS> $t=Get-Date -Hour 17
PS> $t.時(shí)辰
酉時(shí)