Yes! You can start sequences based on astronomical information (Sunrise and Sunset) if you provide the controller with your current latitude and longitude.
Step 1: Set the Latitude and Longitude
Run AMI-Terminal (from the "Tools" menu) or from a stand alone install of AMI-Terminal from the start menu.
Enter your latitude and longitude and press the corresponding button. You should see an "R" returned from the controller when the value is set.
Step 2: Setup your Triggers
You can create triggers in WinScriptLive that occur at a certain time of day.
Right Click in the "Triggers" column of the sequence you'd like to start and create a new "Start" trigger.