PowerShell 5.1 (available on Windows 10 and Server 2016) comes with some new cmdlets to manage computer time zones. Get-TimeZone returns the current settings, and Set-TimeZone would change it:
PS C:\> Get-TimeZone Id : W. Europe Standard Time DisplayName : (UTC+01:00) Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna StandardName : W. Europe Standard Time DaylightName : W. Europe Daylight Time BaseUtcOffset : 01:00:00 SupportsDaylightSavingTime : True