When Is The New Moon In May 2025. All phase dates and times are in the usa eastern time adjusted for daylight savings time for part of the year. The 2025 moon phases schedule will help you look back at when the new, first quarter, full, and last quarter moons occurred each month of the year.
This is why astronomers, the moon phases relate percentage of illumination. The new moon in gemini marks the beginning of a new cycle.