Moon Phases September 2025 Calendar. This month will begin on monday, september 1 st with a phase that will be illuminated. Click on any date in the monthly moon phase calendar to see daily moon phase information.

Moon calendar 2025 with all the moon phases of the year. September 2025 moon phase calendar has the 8 lunar phases of the moon, percent of illumination visible from earth, age of the moon in the lunation cycle of approximately 29.53.