An important aspect of system management is maintaining the licenses on the devices you are responsible for. The BIG-IP includes a programmatic interface to allow you to query the current license in...
The following code does not appear to be valid:
$origin.AddSeconds($EvaluationExpiration.current_system_time).AddHours($gmt_offset)
That code produced a date in 1969. It's worth noting that the command as written doesn't tab complete for the AddHours. To get the code to work as expected I tweaked it like so:
$origin.AddSeconds($EvaluationExperation.current_system_time) | %{$_.addhours($gmt_offset)}