Calculate what phase the moon is.
Why the moon phases are important?
When the moon is new, that is the time to take what you learned in the dark phase and put it into action.
During the waxing phase of the moon is a good time to build solid foundations that extend far into your lives.
Just before the full Moon is a transition phase and at this time you should be allowing things in your life to develop naturally.
The full moon is the time to set your spirit free, self confidence and maturity in your life abound. At this time there is excitement but should never be haste.
The Waning phase of the moon is the time to finish projects and enjoy the fruits of your labor.
The waning phase lasts for about 11 days, from the full moon until the moon vanishes from the sky at the beginning of the dark moon phase.
(Resource: http://kentuckyfarmhouse.com/the-cycles-of-the-moon-the-importance-of-knowing-them/ )