Key Takeaways
- A deep partial lunar eclipse will occur on the night of August 27‑28, 2026, darkening about 96 % of the Moon’s disc.
- The eclipse will be fully visible (including the dramatic “copper‑red” or “deep orange” hue) across the entire United States and Canada.
- Observers can watch safely with the naked eye; binoculars or a small telescope will reveal fine surface details as the shadow moves.
- Greatest eclipse happens at 04:13 UTC (00:13 EDT). Local times vary, with the peak occurring from late‑night August 27 to early‑morning August 28 depending on the city.
- The May 2026 lunar eclipse coincides with the “Sturgeon Moon,” the traditional name for August’s full Moon.
- For the best view, seek a dark location with a clear eastern horizon and minimal light‑pollution.
- Photographers can capture the event with standard DSLR or mirrorless cameras, a telephoto lens, and a stable tripod.
- The eclipse results from Earth’s atmosphere scattering sunlight, which refrains the Moon’s surface in a reddish tone.
- Detailed timings for major North‑American cities are provided to help plan viewing.
Overview of the 2026 Lunar Eclipse
On the night of August 27–28, 2026, North America will witness a very deep partial lunar eclipse. Roughly 96 % of the Moon’s visible disc will be immersed in Earth’s umbral shadow, giving the Moon a striking copper‑red or deep orange coloration—often described as a “Blood Moon.” This event follows the recent partial lunar eclipse of March 3, 2026, and occurs just days after the Sturgeon Moon, the traditional name for August’s full Moon.
How a Lunar Eclipse Occurs
A lunar eclipse takes place when Earth passes directly between the Sun and the Moon, placing the Moon within Earth’s shadow. This can only happen during a full Moon, when the Sun, Earth, and Moon line up precisely. Most full Moons miss the shadow because the alignment is slightly off; however, when the geometry is just right, the Moon traverses Earth’s penumbral and umbral shadows, producing the eclipse stages described below.
Penumbral Phase
The eclipse begins when the Moon first touches the faint outer edge of Earth’s shadow, known as the penumbra. At this stage the Moon’s brightness dims only subtly, and the effect is often difficult to notice without comparison.
Partial (Umbral) Phase
As the Moon moves further inward, a dark “bite” appears on the side of the Moon facing Earth. This is the umbral phase, during which the Moon begins to turn reddish. The coloration intensifies as more of the lunar disc enters the shadow.
Greatest Eclipse
The moment of greatest eclipse marks the peak of coverage. For the August 2026 event, this occurs at 04:13 UTC, when about 96 % of the Moon’s surface is covered by Earth’s umbra. At this instant the Moon appears most dramatically red, and surface features such as maria and craters become starkly visible against the dark backdrop.
Post‑Greatest Eclipse: Exit from Shadow
After reaching maximum coverage, the Moon begins to leave the umbral shadow. The eclipse concludes when the Moon fully exits the umbra, marking the end of the partial phase. Some areas may still be within the penumbra, but the visual effect gradually fades as the Moon returns to its normal brilliance.
Timing for North‑American Observers
The exact moment of greatest eclipse translates into local times that vary across the continent. Below is a summary of key times for several major cities:
- New York, NY (EDT): 00:12 – Aug 28
- Chicago, IL (CDT): 23:12 – Aug 27
- Houston, TX (CDT): 23:12 – Aug 27
- Denver, CO (MDT): 22:12 – Aug 27
- Los Angeles, CA (PDT): 21:12 – Aug 27
- Halifax, NS (ADT): 01:12 – Aug 28
- Montreal, QC (EDT): 00:12 – Aug 28
- Toronto, ON (EDT): 00:12 – Aug 28
- Winnipeg, MB (CDT): 23:12 – Aug 27
- Calgary, AB (MDT): 22:12 – Aug 27
Because the eclipse begins in the early evening for western locations, observers on the West Coast will see the Moon rise already partially eclipsed, while those on the East Coast will experience the greatest phase just after midnight.
Safety and Viewing Tips
Unlike solar eclipses, lunar eclipses pose no risk to the eyes; they can be observed safely with the naked eye. However, using binoculars or a small telescope will dramatically enhance the view, revealing intricate crater rims and the gradual creep of shadow across the lunar surface. Light pollution has minimal impact on a bright full Moon, but a dark site with a clear eastern horizon is ideal, especially for tracking the Moon as it rises and moves low across the sky.
Equipment Suggestions
For astrophotographers, a DSLR or mirrorless camera paired with a telephoto lens (e.g., 300‑600 mm) and a sturdy tripod works well. Typical settings include ISO 800‑1600, short exposure times (1‑2 seconds) to avoid saturation, and optional stacking of multiple frames to capture the subtle color changes. Many recent eclipse photographs have been taken with equipment ranging from smartphones (as in the case of an iPhone 12 in Albuquerque) to dedicated telescopic setups.
The Sturgeon Moon Connection
The full Moon of August is traditionally called the Sturgeon Moon, named after the abundant sturgeon fish historically caught in the Great Lakes and other North American waters during this month. As the Moon rises in the east and tracks low across the southern sky, it mirrors the Sun’s summer position—high in the sky but setting later in the evening. This low trajectory means that observers at higher latitudes will see the Moon travel a short distance across the sky, spending only a few hours in eclipse before setting.
Why the Moon Turns Red
During totality, Earth completely blocks direct sunlight, but a thin ring of sunlight refracts through Earth’s atmosphere and reaches the Moon’s surface. Earth’s atmosphere preferentially scatters shorter blue wavelengths, leaving the longer red wavelengths to illuminate the Moon. This refraction paints the lunar disc in shades ranging from coppery red to deep orange, creating the characteristic “Blood Moon” effect.
Final Thoughts
The August 27‑28, 2026 partial lunar eclipse offers North American skywatchers a rare opportunity to witness a near‑total “Blood Moon” without the logistical challenges of a solar eclipse. With proper timing, a dark viewing location, and perhaps a modest optical aid, anyone can experience the dramatic transformation of the Sturgeon Moon as Earth’s shadow cloaks it in a mesmerizing reddish hue. Share your observations and images with the astronomy community to contribute to the collective appreciation of this celestial event.