Blood Moon Eclipse This Week—Your Ultimate Viewing Guide
Thursday Night’s Near-Total Lunar Eclipse: A "Blood Moon" That’s Almost (But Not Quite) Total
TL;DR: On Thursday night into Friday morning, the Moon will slip into Earth’s shadow for a near-total lunar eclipse. At peak (12:12 a.m. EDT), 96% of the Moon will turn a spooky copper-red — like a glowing penny — while a tiny sliver stays bright. It’s not quite total, but still a must-see if clouds cooperate!
What’s Happening? (The Super-Simple Version)
Imagine the Sun, Earth, and Moon standing in a straight line — Earth in the middle. Earth blocks the Sun’s light, casting a shadow into space. When the Moon walks through that shadow, we get a lunar eclipse.
There are two parts to Earth’s shadow:
- Penumbra — the fuzzy, outer shadow (like standing under a tree on a sunny day)
- Umbra — the dark, inner shadow (like stepping into a dark room)
During this eclipse, the Moon dives deep into the umbra — 96% of it, to be exact. That’s why it’ll glow reddish-copper (the famous "blood moon" look) instead of disappearing completely.
Why red? Earth’s atmosphere acts like a lens, bending sunlight around our planet. Blue light gets scattered (that’s why our sky is blue!), but red/orange light passes through and paints the Moon. It’s basically all the world’s sunrises and sunsets projected onto the Moon at once.
When to Watch (Boston / EDT Times)
| Phase | Time | What You’ll See |
|---|---|---|
| Penumbral begins | 9:23 p.m. (Thu) | Moon enters outer shadow — barely noticeable |
| Partial/Umbra begins | 10:33 p.m. (Thu) | Dark "bite" appears on Moon — this is when it gets cool! |
| MAXIMUM ECLIPSE (PEAK) | 12:12 a.m. (Fri) | 96% covered, glowing red-copper — best viewing moment |
| Partial/Umbra ends | 1:51 a.m. (Fri) | Moon exits dark shadow |
| Penumbral ends | ~3:00 a.m. (Fri) | Moon fully back to normal |
PRO TIP: Set an alarm for 12:00 a.m. — you want to catch the peak! The red glow lasts ~30-40 minutes around maximum.
Where Can You See It?
Good news for most of the Americas!
Visible across:
- All of North America (except Alaska & northwestern Canada)
- All of South America
- Parts of Western Europe & Western Africa
Not visible in: Hawaii, Alaska, northwestern Canada, most of Europe, Asia, Australia
Check the NASA visibility map (in the original article) for exact boundaries.
Why This Eclipse Is Special (Even Though It’s Not "Total")
1. That Tiny Sliver Makes It Unique
With a total solar eclipse, you need 100% coverage for the "wow factor." But a 96% lunar eclipse? That 4% bright sliver acts like a nightlight — it lets you see the contrast between the glowing red part and the still-lit part. It’s like a cosmic yin-yang symbol in the sky!
2. It’s the "Deepest" Partial in Centuries
This eclipse belongs to Saros 138 — a family of eclipses repeating every 18 years, 11 days, 8 hours (6,585 days).
- Series started: 1521
- Series ends: 2982
- Every eclipse since 1918 has been partial
- This one (96%) is the deepest partial yet!
- Next in series (2044): Finally TOTAL!
3. It’s the Finale of an "Almost Tetrad"
A tetrad = 4 total lunar eclipses in a row (~6 months apart).
We’ve had 3 totals recently:
- March 14, 2025
- Sept 8, 2025
- March 3, 2026
- This one (Sept 17/18, 2026) — 96% partial → "Almost Tetrad"
Last true tetrad: 2014–2015 | Next true tetrad: 2032–2033
The "Sturgeon Moon" Bonus
The exact moment of full Moon is 12:18 a.m. Friday — just 6 minutes after max eclipse!
August’s full Moon is traditionally called the Sturgeon Moon (named by Algonquin tribes for when sturgeon fish were easily caught in Great Lakes).
Fun fact from the author: "I was watching sturgeon jumping in a Maine cove this weekend — now I know why it’s called that!"
Will the Weather Cooperate? (New England Forecast)
| Region | Forecast |
|---|---|
| Eastern / Coastal New England | Partly to mostly cloudy — might get glimpses! |
| Western New England | Increasing clouds + scattered showers — tougher viewing |
IMPORTANT: Clouds are the #1 eclipse spoiler. Check your local forecast Thursday afternoon and have a backup viewing spot (higher elevation, less light pollution) just in case!
How to Watch: 5 Easy Steps
- Set an alarm for 11:45 p.m. Thursday (gives you time to get ready)
- Dress warm — late August nights can be chilly, especially sitting still
- Find a spot with a clear view south/southwest (Moon will be ~30° up)
- Just use your eyes! No telescope needed — binoculars enhance the red color beautifully
- Snap a pic? Phone cameras can capture it if you:
- Tap the Moon to focus
- Lower exposure (slide sun icon down)
- Hold steady or prop against something
No special glasses needed — unlike solar eclipses, lunar eclipses are 100% safe to watch naked-eye.
Summary: Why You Shouldn’t Miss This
| Reason | Why It Matters |
|---|---|
| Rare depth | 96% coverage = deepest partial in 100+ years for this eclipse family |
| Blood Moon beauty | Red-copper glow is stunning — "like a penny in the sky" |
| Perfect timing | Peak at 12:12 a.m. = manageable for night owls & early birds |
| No gear needed | Just your eyes + clear sky |
| Cosmic context | Part of Saros 138 (since 1521!) & finale of an "almost tetrad" |
| Sturgeon Moon | Full Moon + eclipse = double celestial treat |
Biggest risk: Clouds. Fingers crossed for clear skies!
FAQ: Your Eclipse Questions Answered
1. Is it dangerous to look at a lunar eclipse?
Nope! Unlike a solar eclipse, a lunar eclipse is completely safe to watch with your naked eyes, binoculars, or telescope. You’re looking at the Moon, not the Sun.
2. Why isn’t this a total lunar eclipse if 96% is covered?
"Total" means 100% of the Moon enters Earth’s umbra (dark inner shadow). At 96%, a tiny 4% sliver stays in the penumbra (outer shadow) and keeps getting direct sunlight. That’s why it’s called a deep partial or near-total eclipse.
3. What’s a "Saros cycle" in plain English?
Think of it like a cosmic playlist on repeat. The Sun, Earth, and Moon return to almost the exact same geometry every 18 years, 11 days, 8 hours. Each "track" on the playlist is one eclipse. Saros 138 has been playing since 1521 and won’t end until 2982!
4. Can I see it from [my city]?
If you’re in North America, South America, Western Europe, or Western Africa — yes! (Except Alaska, NW Canada, Hawaii). The Moon rises during the eclipse for West Coasters, so you’ll catch it low on the horizon — extra photogenic!
5. What if it’s cloudy where I am?
- Check live streams: NASA, Virtual Telescope Project, and local observatories usually broadcast live
- Watch for gaps: Even "mostly cloudy" skies often have brief clear patches
- Next chance: The next total lunar eclipse visible in the Americas is March 2026 — but this "almost tetrad" finale won’t repeat for 18 years!
Final Thought
"Get outside!" — as the article says. Even if you only catch 10 minutes around 12:12 a.m., seeing the Moon turn ancient-copper-red with your own eyes connects you to thousands of years of humans looking up in wonder.
Clear skies, and happy eclipse watching!