New moon of August 2025 gets eclipsed today September's new moon occurs on Sept. 21 and will partially eclipse the sun for skywatchers in the southern Pacific Ocean and Antarctica. Astrobitica September 21, 2025 (Last updated: September 21, 2025) 1 minute read September’s new moon occurs on Sept. 21 and will partially eclipse the sun for skywatchers in the southern Pacific Ocean and Antarctica. About the Author Astrobitica Administrator Visit Website View All Posts Post navigation Previous: Don’t miss the partial solar eclipse today! Where, when and how to see itNext: Blisslights Oblivia outdoor star projector review