A PowerShell function to return the salutation for the part of day it is currently, either Morning, Afternoon or Evening.

PartOfDay.ps1

Function Get-PartOfDay {
    Param (
        [int]$Hour = (Get-Date).Hour
    )
    Switch ($Hour) {
        {$_ -in 0..11}  {'Morning'}
        {$_ -in 12..17} {'Afternoon'}
        {$_ -in 18..23} {'Evening'}
    }
}

"Good $(Get-PartOfDay)!"