The documentary above makes the claim that Mercury and Venus would never be visible in the Heliocentric modal. It may, or may not be, the voice of Eric Dubay. I've done a little research and found this claim invalid. I did come across something interesting, and that's what I'd like to share.
We'll use Pretoria Africa as our starting point. I love Africa, because it's near the center of the globe face, and if any place could break a modal, it's Africa. It's great for this kind of scientific assessment.
Sunset: 7:04PM
https://www.timeanddate.com/sun/south-africa/pretoria
Venus Set Time: 9:46PM
https://www.timeanddate.com/astronomy/night/south-africa/pretoria
We'll use the time 8:20PM-8:40PM. This is just after sunset, and about an hour before Venus sets.
The following image is a diagram of Africa, containing a red line for field of view, and a red line to the planet. It's all crude estimates, but we're pretty close for the time.
As we can see the claim has been totally debunked, but an interesting question arises. Are they seeing the full planet, or a half lit planet? Considering the angle, only a small portion of the planet should be lit. Pretoria South Africa should pretty well be looking near the dark side of Venus on January 9th, 2017.
Note: Venus and other planets have phases, so the claim may be totally debunked.
Live Chart Of Solar System:
http://www.theplanetstoday.com/
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