Regional Settings determines your date and time format of a SharePoint Web application.It can be set at three levels
- Web Level
- Site Level
- User Level
To Change the Regional settings at a web level, use the following power shell commands
$spsite= Get-SPSite -Identity "http://mysite/testSite "
$rootWebSite = $spsite.RootWeb
$website = $spsite.OpenWeb($rootWebSite.ID)
$culture = [System.Globalization.CultureInfo]::CreateSpecificCulture(“en-GB”)
$website.Locale = $culture
$website.Update()
$website.Dispose()
$rootWebSite.Dispose()
$spsite.Dispose()