As you have guessed already, the main idea of this set of exercises is to let you explore the possibilities of Universal Language of events.

The angle between the Sun and Mars is 330 degrees

Here is the Efficiency Test for Dow Jones Industrial 1885-2006 in regards to 330 degrees between the Sun and Mars:

We can specify the region where the DJI falls:

Let's connect the points:

as you see if we compare the DJI 2 days before this event with the value 3 days after, the DJI will go down 32 times against 24 times up. 

Clicking "Best Strategy" button, I have found this strategy:

It provides 64% downward movements during 2 trade days.

Also this downtrend movement can be seen in the Astronomy module: