Hmm.. does the destination system count?

For example, a trip from 18.5 to 18.1, would it be like this:

1) 30 seconds to load cargo from source planet
2) 4 minute trip to 18.4
3) 4 minute trip to 18.3
4) 4 minute trip to 18.2
5) 4 minute trip to 18.1
6) 30 seconds to dock and unload

Or is there a step between 5 and 6 where the harvester lands in the system, and does it take 4 minutes to travel to the destination planet or is that all included in the 30 second unload window?