It is my understanding the above photo is the factory orientation of the distributor, rotor position when pointing at #1 at TDC is at 7:00 o'clock.
However, the distributor may be installed 180 degrees opposite from the standard position as is the case on my car. The rotor on my distributor points at 1:00 o'clock when firing #1 at TDC. Either installation works fine when the plug wires are clocked accordingly. The two different installations are dependent on how the oil pump was installed.
It is imperative that #1 at TDC at compression be determined prior to installing the plug wires.....details provided in previous posts.