by Sandra Nicolaysen. The First Quarter Moon occurs halfway between the New Moon and the Full Moon. This is a time for building and investing because things gain speed and momentum. It's the moment within the Lunar Cycle when taking intentional action is key for further advancement. Conflicts of interest are likely during the First Quarter of the Moon because it forms a Square (90°) between the Sun and the Moon, representing an imminent tension that needs to be addressed with no delays.