Lunations refer to the cycles of the moon, also known as lunar phases. Synonyms for the word include lunar cycles, moon phases, lunar months, or moon cycles. These terms all describe the regular and predictable changes in the appearance of the moon as it orbits the Earth, from the new moon to the full moon and back again. Other related terms for lunations might include lunar synodic periods or lunar calendars, which track the phases of the moon in relation to the changing seasons. Whether you refer to them as lunations, lunar cycles, or moon phases, these regularly occurring celestial events have fascinated and inspired humans for millennia.