Student Project . . Make a Moon Phases Calendar and Calculator Jet Propulsion Laboratory https://www.jpl.nasa.gov/ Last Updated: Nov. 19, 2025 Subject Science Time Required Under 30 mins Grade Levels K-9 Have you ever wondered when the next full moon will be? How about the first quarter moon? Now you can have all the dates and times for all the moon phases for the year at your fingertips by building your own moon phases calendar and calculator! Download the 2026 calendar Now also available as a