1. The period of time it takes for the moon to complete one full orbit around the Earth, approximately 29.5 days
The lunar cycle affects the tides of our oceans.
O ciclo lunar afeta as marés dos nossos oceanos.
2. The sequence of lunar phases from new moon to new moon
Many cultures have marked time by the lunar cycle for thousands of years.
Muitas culturas marcaram o tempo pelo ciclo lunar há milhares de anos.