A clock in the sky
Face downwind and imagine a giant clock face standing in front of you. The edge of the window runs from 9 o’clock (left, on the water) over 12 (straight above you) to 3 o’clock (right, on the water).
Instructors use these clock positions all the time: “park it at 12”, “launch at 3”, “dive from 1 to 2”.