Moon enters Waning Gibbous phase after September 26 Full Moon

Following the official Full Moon on September 26, 2026, the Moon enters the Waning Gibbous phase on September 27. The lunar surface remains highly visible, with illumination levels reported between 98% and 99%.

Astronomical data from NASA and the National Institute of Meteorology (Inmet) indicate that the Moon is beginning its gradual reduction in light. Observers can view features such as Mare Imbrium, Mare Vaporum, and Kepler Crater without visual aids. Binoculars can reveal the Clavius, Alphonsus, and Archimedes craters, while telescopes may allow for the sighting of the Apollo 14 and 15 landing sites.

The lunar cycle, which averages approximately 29.5 days, will continue through its remaining phases before the next Full Moon occurs on October 25 or 26, depending on the observer's timezone.