I believe the Biebs is not gay because 1 he is the most amazing guy anyone can meet 2 he has the voice of an angel 3 he has the hottest body in the whole world!!! 4 he sings a lot about girls 5 he is dating Selena Gomez for himmony crickets!
The first time teller was invented by the Romans so some people say. It was called the sundial, but for a fact, the sundial had to face North. And so the answer to your question is indeed another question, who invented the compass rose? And the 4 different directions of the Earth.