full moon calendar 2026

Orbital Geometry and the 2026 Micromoon

The lunar cycle will reach a precise peak of illumination on Monday, June 29, 2026, at 7:58 p.m. EDT. This specific event, traditionally termed the Strawberry Moon in parts of North America, serves as a clean case study in orbital eccentricity and its visible consequences for skywatchers.

On that evening, the moon will be positioned near its apogee-the furthest point in its elliptical orbit around Earth-marking it as a micromoon. Unlike supermoons, which occur near perigee, micromoons appear roughly 12% to 14% smaller and dimmer. This variance is not a visual illusion but a direct result of the physical distance between the Earth and the lunar surface, which alters the apparent angular diameter of the moon as viewed from the ground.

The 2026 lunar calendar exhibits noticeable swings in apparent size, driven by the mismatch between the solar year (based on Earth’s orbit around the sun) and the lunar year (based on a sequence of lunar phases). This disparity results in an extra full moon for the calendar year, creating a diverse sequence of lunar events that will feature prominently in public outreach by space agencies, science centers and national weather services:

While these are primarily observational curiosities, they also matter in subtle ways for coastal and emergency-management planning. Micromoons slightly moderate the tidal range, in contrast to perigee full moons that can amplify so-called “king tides” and influence local flood risk assessments used by municipal governments and coastal regulators.

Atmospheric Optics and the Low-Arc Phenomenon

In the Northern Hemisphere, the June 29 event is characterized by an unusually low trajectory. This occurs because the full moon always sits roughly in opposition to the sun in the sky. Following the summer solstice on June 21, when the sun reaches its maximum daily arc for the year, the moon at full phase is forced into one of its lowest apparent arcs, hugging the southern horizon for mid-latitude observers.

This low-hanging position forces moonlight to travel through a denser cross-section of the Earth’s atmosphere. That path enhances atmospheric scattering, in which shorter blue wavelengths are dispersed and longer red and orange wavelengths dominate. For observers, this can create a distinct visual shift as the moon rises along the southeastern horizon, sometimes deepening the warm tones-though not guaranteeing a dramatic red or pink disc.

The optimal observation window occurs during the “blue hour,” the transitional period of dusk where the sky retains deep color while the moon begins its ascent. For many U.S. cities, that timing coincides with peak evening activity and, in some jurisdictions, with scheduled public programming at parks and observatories funded under local science-education mandates. Regional timing for this window includes:

• New York City: Sunset at 8:31 p.m. EDT, followed by moonrise at 8:48 p.m. EDT.
• Los Angeles: Sunset at 8:08 p.m. PDT, followed by moonrise at 8:26 p.m. PDT.

Because the event will be visible across much of the United States and allied countries, national meteorological services and civil-aviation authorities are expected to factor clear-sky forecasts and low-level haze into their public guidance, mirroring the approach commonly taken for high-profile eclipses and meteor showers.

Computational Imaging, Policy Uses and Lunar Observation

Capturing a micromoon during the blue hour presents significant challenges for digital imaging sensors due to the high contrast between the darkening sky and the bright lunar surface. Modern computational photography on smartphones and dedicated cameras relies on high-dynamic-range (HDR) stacking to prevent the moon from appearing as a blown-out white disc against a black background, a capability that has rapidly expanded the volume of citizen-science imagery available to researchers.

Precision tracking of these events is managed via ephemeris data, which provides the calculated positions of celestial bodies at any given time. This information is generated and distributed under the framework of the U.S. National Aeronautics and Space Administration’s statutory mandate to conduct space science and share results for public benefit, and it underpins both professional observatories and consumer-facing astronomy apps.

For space agencies and defense ministries, accurate lunar ephemerides are not only a scientific tool but also a planning input for satellite operations, deep-space navigation and night-time imaging systems used in environmental monitoring and disaster response.

The terminology associated with the event-including the Berries Ripen Moon, Green Corn Moon and Hot Moon-reflects traditional agricultural markers in different cultures rather than the actual chromatic properties of the moon, which are governed by the physics of the Earth’s atmosphere. For Indigenous communities and local agricultural cooperatives, these seasonal names remain part of living calendars that intersect with land-use decisions, planting schedules and, increasingly, climate-adaptation planning at regional and national levels.