Now of course this doesn't mean that you shouldn't let go of something during the waxing moon, or that you can't sign up for something new in the Waning moon. It does mean that if you have plans for this kind of work, including the tidal pull of the different moon phases in your plan, will support your actions in the same way that swimming with or against the tide makes your swim easier or more difficult.
The New Moon. The New Moon is of more subtle nature. When this Moon touches the Sun she doesn't reflect any light. The New Moon is invisible to our eyes. The light of consciousness is gone for a short period of time and with it the self perception and self awareness. This moment signifies a clean slate, a new beginning into the next round of the Moon circling the Sun, the center of our universe representing the highest consciousness and life giving force for all the inhabitants of our earth.
Why hide these accomplishments? It has been difficult to argue for a conspiracy because no theory has offered a sufficiently convincing motive. An idea called "the frontier theory of history" provides two.