Full Buck Moon to Illuminate Skies: Summer 2025's First Full Moon

On July 10, 2025, the Full Buck Moon will grace the night sky, marking the first full moon of summer. This astronomical event occurs at precisely 20:39 UTC (4:39 p.m. EDT) and is expected to be visible in regions with clear skies. The term 'Buck Moon' originates from the time of year when male deer, or bucks, are in the full growth of their antlers. According to the Old Farmer's Almanac, this nomenclature reflects historical agricultural practices and indigenous traditions in North America, which recognized the cyclical nature of the lunar phases.

The Buck Moon will not only be a prominent feature on the night of July 10 but will maintain its full appearance through moonrise to moonset during the night of July 10-11, and even during its rise on July 11. This full moon is part of a series of lunar events that summer, including two additional full moons in August and September, with the latter coinciding with a total lunar eclipse, although that event will not be visible from Canada.

The phenomenon of the moon appearing larger when it is near the horizon, referred to as the 'Moon Illusion', will provide an additional visual treat for skywatchers. Observers are encouraged to view the moon shortly after sunset or just before sunrise to experience this optical illusion fully.

Historically, indigenous groups in North America utilized a lunar calendar to track seasons and agricultural cycles, assigning names to each full moon based on nature's changes. The Anishinaabe people, for instance, conceptualized their calendar through the patterns on a turtle's shell, with the 28 plates symbolizing the days of the lunar month.

In terms of visibility, the Full Buck Moon will be over 99% illuminated, providing a striking view for those located in areas free from light pollution. As the summer progresses, the next two full moons will likely capture the attention of astronomy enthusiasts, particularly as they transition into the anticipated 'Supermoons' that will occur later in the year, delivering even more spectacular views.

In summary, the Full Buck Moon serves not only as a celestial landmark but also as a reminder of the rich cultural narratives that have emerged around lunar cycles. As summer unfolds, skywatchers are invited to engage with this natural phenomenon, celebrating both its beauty and its historical significance.