The full moon in August 2025 occurs on August 9th, not August 20th. This full moon is known as the Sturgeon Moon and reaches its full phase early on August 9 at 07:55 UTC. By August 20, 2025, the moon is in its waning crescent phase, which means it is getting smaller and closer to the new moon phase, with only about 9% illumination visible on that day. So, there is no full moon on August 20, 2025; the full moon is on August 9, 2025.