Clarification, do you want the light to come on at sunset regardless ?
If that is the case it pretty straight forward.
Using Apilio time condition
You can set up a sunset condition with and offset. IE 10 minutes before sunset.
Then using a logiblock you can send the on request to your bulb using IFTTT actions. These are automatically set up when you set the name in the logiblock
This will explain how to set the action chain up