Moon Phase Calendar 2025 September New Moon. 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. When is the new moon in september 2025?

Lunar calendar of the 2025 new moons, 2025 black moon, and 2025 solar eclipses. Below are the moon phases for 2025 including the new, first quarter, full, and last quarter for each month.