The Nodes of the Moon are not planets – they are purely mathematical points that show where the path of the Moon crosses the path of the Sun (called the “ecliptic”). The North, or ascending, node acts as a signpost to take us into the future – it points the way for our soul’s evolutionary growth. The South, or descending, node is a signpost from the past. Through the South Node we release people, places and things which we carry with us that are no longer needed.
The North and South Nodes are always in opposite signs, reflecting the polarity of the astrological pantheon, and they change signs approximately every eighteen months or so. On March 23 the mean calculation for the North Node will move from Scorpio into Libra. Some astrologers use the “true node” which will change signs on February 19th.
One of many things astrologers argue over is whether to use the “mean node” or the “true node.” Steven Forrest has written a which I can’t improve upon. Steven says:
[T]he actual moment-to-moment position of the lunar nodes is quite twitchy. Essentially that is how the true node is calculated—although in reality most astrological computer do not take all of these effects fully into account. Even the “true” node is not really true. The bottom line is the calculated true node’s motion is eccentric. It can even sometimes go briefly Direct.
The mean node assumes the simpler view: that the Moon orbits the center of the Earth. The effect is to smooth everything out a bit.
In any case, when the lunar nodes change signs there is a shift in focus on […]