You can get SPO site collection date by using below PowerShell script Get-SPSite -Limit All | % { $root = $_ . rootweb; $date = $root . created . toShortDateString(); Write-Host " $( $root . url) was created on $( $date ) " } Fuente: https://www.c-sharpcorner.com/forums/how-to-get-spo-site-created-date