cls

[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint")

foreach ($webApplication in Get-SPWebApplication) {

    Write-Host

    Write-Host "Processing $webApplication"

    Write-Host "******************************"

    $webApplication.DefaultTimeZone = 45  #only set the default time zone, cannot change the time zone

    

    foreach ($site in $webApplication.Sites) {

       

        $webs = $site.AllWebs

        Write-Host

        Write-Host "Processing $site"

        Write-Host "******************************"

        foreach ($web in $webs) {

            $culture=[System.Globalization.CultureInfo]::CreateSpecificCulture("zh-cn")

            $web.Locale=$culture

            #write-host $web.RegionalSettings.TimeZone #= 45

            $web.Update()

            $web.Dispose()

            Write-Host $web.Url

        }

    }

    $webApplication.Update()

}