The Lunar Nodes
Another important part of Karmic and Horary Astrology are Lunar Nodes. When The Moon's orbit around the Earth is not ecliptic. You could visualize them as two giant hula hoops, one inside the other, held at an angle. The Moon's orbit crosses the Ecliptic in two places and they are called the Moon's Nodes. The North Node is where the Moon crosses the ecliptic going toward the northern hemisphere, and the South Node is where she crosses the ecliptic headed south. The North Node and the South Node are always directly opposite one another in the sky. They make a complete circle through the 12 signs every 18 years. When the New Moons and Full Moons happen near the Moon's Nodes, eclipses happen. That is because the Earth, Sun, and Moon are lined up so precisely that a shadow is cast. In a karmic astrology, the Moon's Nodes represent lessons we need to learned in this incarnation. These lessons almost always have to do with the way we connect with others. That's why the Nodes are associated with patterns of relating, and the wisdom to be found within them is often the key to recognizing and healing patterns of relating which stand in the way of our happiness. The Nodes are a pair.
The South Node represents habit patterns from childhood or from past lives. These are especially powerful if you have a planet conjunct the South Node in your chart. The sign and house placement of the South Node tells where you have a tendency to totally overdo things. The sign and house of the North Node represent circumstances and activities that usually feel unfamiliar. It's the "secret shadow" of the South Node sign, and it's the key to getting that craving met. That's why the North node reveals an area of massive growth potential in your life. It's the key to getting energy flowing. Basically according to Astrology, the Nodes of the Moon suggests that we all come into this world with some underdeveloped and overdeveloped aspects of our character. The Nodes of the Moon point us to these specific qualities: the South Node suggests our overdeveloped character traits that are easy for us to fall back on, but that may undermine our lives if we hold on to these traits for security; while the North Node suggests the qualities that we need to develop in order to find inner balance.
The moon's nodes return to their place every 18.5 years, that is, when a person reaches the ages of 37 and 56. Age of 37 called the fatal age. At this age people who have not completed their Karmic evolutionary tasks and have not been able to give up things that have already been worked out, might die (if they were given too many capabilities) or go through heavy life lessons.
What one has come to do in life, one's destiny
What one does the easiest yet fails to implement.