What Is the August Full Moon
The August full moon is the full moon that occurs in the month of August. It is also known as the Sturgeon Moon, Green Corn Moon, or Grain Moon. The exact date and time change every year based on the lunar cycle. The full moon phase happens when the Moon is on the opposite side of Earth from the Sun. This alignment makes the Moon appear fully illuminated from our viewpoint. The timing is published by organizations such as NASA and the U.S. Naval Observatory NASA.
In 2025, the August full moon occurs on August 12 at 01:55 UTC, according to the latest published ephemeris data. The Moon reaches its fullest illumination at that precise moment. The Sturgeon Moon name comes from Native American traditions linked to the sturgeon fishing season in the Great Lakes and other major waterways. The full moon rises near sunset and sets near sunrise, making it visible all night. Farmers and outdoor industries historically used these moon phases to plan activities.
August Full Moon Dates and Lunar Phases
The August full moon moves through the Gregorian calendar each year. In 2024, it occurred on August 19. In 2025, it occurs on August 12. In 2026, it is expected on August 1 or 2, depending on the time zone. The lunar synodic month averages 29.53 days, which drives these shifts. The exact UTC timestamp is critical for global trading desks, astronomy apps, and event planners timeanddate.com.
The Moon passes through eight primary phases in its cycle. The full moon is the fourth phase, following the new moon, first quarter, and waxing gibbous. After the August full moon, the waning gibbous phase begins. Each phase has a precise astronomical definition based on the Moon's ecliptic longitude relative to the Sun. The U.S. Naval Observatory publishes these calculations U.S. Naval Observatory.
August Full Moon and Financial Market Impact
Some traders reference the lunar cycle when analyzing short-term market behavior. The so-called lunar effect hypothesis suggests that asset volatility or volume may shift around full moon dates. Academic studies on this topic show mixed results. A 2024 meta-analysis found no statistically significant relationship between lunar phases and broad equity returns. However, niche strategies and sentiment indicators sometimes incorporate calendar-based events, including full moons Forbes.
Institutional investors typically focus on earnings reports, central bank decisions, and macroeconomic data rather than lunar calendars. Retail trading platforms have occasionally promoted lunar-themed content to engage users. Companies like Tesla and SpaceX operate on strict mission timelines that are not tied to moon phases. The SEC requires public companies to disclose material events based on facts, not astronomical calendars SEC. For most portfolio managers, the August full moon is a cultural marker, not a trading signal.