May 2025 Moon Calendar. The beginning of may 2025 starts with a first quarter moon phase that is 49.89% illuminated. Explore the 2025 lunar calendar with full and new moon dates and times, in addition to peak annual meteor showers and a total lunar eclipse in march.
The calendar below depicts the phases of moon in each day of may 2025. A new moon is the first lunar phase that happens about once a month or 29.53 days on.