You are in the correct hemisphere. You have both of the cardinal points correct.and both relate, but in different senses to the difference in latitude or longitude between Capetown and the city served by this airport.
Enjoy the sleep. I'm signing off in an hour or so here in my COVID-19 case free Kiribati environment to have a few beers before we run out!
MJG
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Last edited by mgahan; 9th Apr 2020 at 04:59.
Reason: correct error of fact.