Hi Harry, after dark is referring to the time between sunset and sunrise.
The "Sunrise Switch Lights On" sequence has a time trigger at 5:20am then checks if it's after dark. I think it would be best to remove the 'after dark' step, and replace the time trigger with a sunrise trigger. The time of the trigger would adjust automatically each day based on when sunrise is expected.
It would use the latitude and longitude co-ordinates in your user settings to determine when sunrise is, so you should make sure these co-ordinates are correct.