New Moon:
New moon workings can be done from the day of the new moon to three and a half days after. The new moon is for starting new ventures, new beginnings. Also love and romance, health or job hunting.

Waxing Moon:
From seven to fourteen days after the new moon. The waxing moon is for constructive magick, such as love, wealth, success, courage, friendship, luck or health.

Full Moon:
From fourteen to seventeen and a half days after the new moon. Prime time for rituals for prophecy, protection, divination. Any working that needs extra power, such as help finding a new job or healings for serious conditions, can be done now. Also, love, knowledge, legal undertakings, money and dreams.

Waning Moon:
From three and a half to ten and a half days after the full moon. The waning moon is used for banishing magick, for ridding oneself of addictions, illness or negativity.

Dark Moon:
From ten and a half to fourteen days after the full moon. The dark moon is a time for dealing with attackers, for exploring our darkest recesses and understanding our angers and passions. Also bringing justice to bear.

Information from Wiccan Tables