How long is a lunar cycle?
It takes 29 days for the moon to orbit the earth (a full lunar cycle). As it path is easily observed, traditional calendars were based on lunar cycles. ~~ What is a lunar fertility chart? A lunar fertility chart is based on your lunar phase return. The lunar phase return is when the moon’s angle with the sun returns to the same angle it was at your birth. By finding out when this occurs, your lunar fertility can be charted and used to determine fertility cycles. ~~ Online lunar calendar Lunar phases are based on your computers clock. If you are experiencing difficulties viewing this lunar phase calendar, make sure you can view javascript (ie: switch off java blocking).