A synchronicity is a meaningful coincidence.

Rigorous Intuition: What Dreams May Come:

"We likely know by our experience of them that synchronicities don't pertain only to borderland experiences. However, they do all lead us to borderland issues of human consciousness.

In 1906 Carl Jung found a young patient diagnosed as paranoid schizophrenic staring out of his ward window at the sun, moving his head from side to side. Jung asked him what he was doing, and the man explained he was watching the sun's penis, and moving his head it moved as well, and caused the wind to blow. Several years later, as Michael Talbot recounts in The Holographic Universe, Jung read a translation of an ancient Persian religious text that consisted of a 'series of rituals and invocations designed to bring on visions':

It described one of the visions and said that if the participant looked at the sun he would see a tube hanging down from it, and when the tube moved from side to side it would cause the wind to blow. Since circumstances made it extremely unlikely that the man had contact with the text containing the ritual, Jung concluded that the man's vision was not simply a product of his unconscious mind, but had bubbled up from a deeper level, from the collective unconscious of the human race itself."