When is the next total solar eclipse?

The next total solar eclipse is August 12, 2026, visible from Greenland, Iceland, and northern Spain. The following major total eclipse is August 2, 2027 across Spain, North Africa, and the Middle East — up to 6m23s of totality.

Where can I see the 2026 solar eclipse?

The August 12, 2026 total eclipse crosses Greenland, Iceland, and northern Spain. Use Eclipse Predictor to view the exact path of totality on a 3D globe.

Where is the 2027 eclipse of the century?

The August 2, 2027 total eclipse — one of the longest of the century at over 6 minutes — crosses Spain, Morocco, Algeria, Libya, Egypt, and Saudi Arabia.

2026 & 2027 Solar Eclipse Paths on a 3D Globe

Eclipse Predictor

Step through every solar eclipse from 1900 to 2200 — about 3,700 events. Eclipse identification and Sun/Moon positions come from astronomy-engine (Don Cross's port of Steve Moshier's ephemeris, sub-arcsecond accurate, MIT-licensed). Path of the Moon's shadow uses the same MoonShadow + GeoidIntersect pipeline as SearchGlobalSolarEclipse — WGS84 geoid intersection for NASA/Espenak parity.

Controls

← / → — previous / next eclipse (or arrow keys)
JUMP TO — type a year to jump to the nearest cataloged eclipse
PLAY — auto-advance every 2 seconds
Drag the globe to rotate; scroll to zoom
Hover a 3D landmark to see its name
YOUR LOCATION — enter lat/lon (default Hornedo 43.3872, -3.7478) and CHECK totality at your spot

What you see

Red ribbon: path of totality / annularity (umbra centerline as Earth rotates beneath the Moon's shadow)
Yellow dot: point of greatest eclipse (where shadow axis comes closest to Earth's center)
Faint outer band: rough penumbra extent (where partial eclipse is visible)

How it works

Sun & Moon positions from astronomy-engine (Moshier's port of JPL DE-style theories) — sub-arcsecond accurate
Eclipse search via SearchGlobalSolarEclipse/NextGlobalSolarEclipse from the same library
MoonShadow + GeoidIntersect — shadow axis from Sun–Moon geometry, intersected with the WGS84 ellipsoid (same core as NASA catalog)
Central path sampled every 30 s for ±3 hours around greatest eclipse; local view via SearchLocalSolarEclipse

Accuracy

Eclipse times and path geometry match NASA's Five Millennium Canon (Espenak/Meeus) — sub-km on the ground for 1900–2200. The GeoidIntersect pipeline is the same one astronomy-engine uses internally for global eclipse search. For mission-critical planning, cross-check with eclipse.gsfc.nasa.gov.

The Math

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1 · TIME

$$ JD_{\text{TT}} = JD_{\text{UT}} + \frac{\Delta T}{86400}, \qquad \theta_0 = 280.46061837 + 360.98564736629\,(JD - J2000) + \dots $$

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2 · SUN POSITION (astronomy-engine, equator-of-date with aberration)

$$ L_0 = 280.46646 + 36000.76983\,T,\quad M = 357.52911 + 35999.05029\,T $$ $$ C = (1.9146 - 0.0048\,T)\sin M + 0.020\sin 2M + \dots,\quad \lambda_\odot = L_0 + C $$ $$ R = \tfrac{1.0001\,(1-e^2)}{1 + e\cos(M+C)}\;\text{AU} $$

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3 · MOON POSITION (astronomy-engine, Moshier ephemeris)

$$ \lambda_\text{☾} = L' + 10^{-6}\!\!\sum_i a_i \sin(d_i D + m_i M + m'_i M' + f_i F) $$ $$ \beta_\text{☾} = 10^{-6}\!\!\sum_i b_i \sin(\dots),\qquad r_\text{☾} = 385000.56 + \tfrac{1}{1000}\sum_i c_i \cos(\dots) $$

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4 · SHADOW-CONE GEOMETRY (MoonShadow · GeoidIntersect)

$$ \vec{G} = \vec{r}_\text{☾} - \vec{r}_\odot,\quad u = \tfrac{\vec G \cdot (-\vec r_\text{☾})}{|\vec G|^2} $$ $$ k = R_\odot - (1+u)\,(R_\odot - R_\text{☾}),\qquad p = -R_\odot + (1+u)\,(R_\odot + R_\text{☾}) $$ $$ \gamma = \tfrac{r_\perp}{R_\oplus}\ \ (\text{axis–geocentre distance}),\qquad \gamma < 1 \Rightarrow \text{central line exists} $$ $$ k > 0\ \text{at surface} \Rightarrow \text{total},\qquad k < 0 \Rightarrow \text{annular} $$ (This engine uses astronomy-engine's MoonShadow/GeoidIntersect — not the Besselian fundamental-plane elements.)

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5 · MAGNITUDE & GAMMA

$$ \gamma = \sqrt{x^2 + y^2},\qquad \text{mag} = \frac{\theta_\text{☾}}{\theta_\odot} = \frac{k R_\oplus / r_\text{☾}}{R_\odot / r_\odot} $$

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6 · CLASSIFICATION

$$ \text{type} = \begin{cases} \mathrm{T} & \gamma < 1 \text{ and } \ell_2 < 0 \;(\text{umbra reaches Earth}) \\ \mathrm{A} & \gamma < 1 \text{ and } \ell_2 > 0 \;(\text{antumbra}) \\ \mathrm{P} & \gamma \ge 1 \;(\text{penumbra only}) \end{cases} $$

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7 · CENTRAL PATH ON EARTH

$$ z = \sqrt{1 - x^2 - y^2}\;\text{(spherical Earth, fundamental plane to surface)} $$ $$ \begin{aligned} X &= -x\sin(-\mu) - y\sin d\cos(-\mu) + z\cos d\cos(-\mu) \\ Y &= x\cos(-\mu) - y\sin d\sin(-\mu) + z\cos d\sin(-\mu) \\ Z &= y\cos d + z\sin d \end{aligned}$$ $$ \varphi = \arcsin Z,\qquad \lambda = \operatorname{atan2}(Y, X) $$

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2026 & 2027 Solar Eclipse Paths

Step through every solar eclipse from 1900 to 2200. Paths of totality are computed with astronomy-engine (sub-arcsecond ephemeris) and drawn on a rotatable 3D Earth.

First time here? This site is a free game & sim collection by one engineer — while you wait for totality, try today's Wordform, Drift, or daily Sudoku, and see the 2026/2027 viewing guide for trip planning.

Upcoming total eclipses

Aug 12, 2026 — total: Greenland, Iceland, northern Spain
Aug 2, 2027 — total: Spain through Egypt (“Eclipse of the Century,” 6m+ totality)
Apr 8, 2024 — Great American Eclipse (replay)

What you can explore

Deep links: ?date=2026-08-12 or ?year=2027 jump straight to the eclipse.
Toggle coastlines, night shading, penumbra band, and landmark cities along the path.
Open Show the Math for shadow geometry and contact times; use YOUR LOCATION to check totality at your coordinates.

How the model works — the real astronomy

Every eclipse position in this tool comes from the open-source astronomy-engine library (astronomy.browser.min.js), which implements the VSOP87 / high-precision lunar theory used for professional ephemerides. Nothing here is a hand-rolled Kepler approximation: the Sun's geocentric vector is read from Astronomy.GeoVector(Sun, t, aberration=true) and the Moon's from Astronomy.GeoMoon(t), and eclipses are located with the library's own SearchGlobalSolarEclipse / NextGlobalSolarEclipse. The catalog spans 1900–2200, matching NASA's Five Millennium Canon of Solar Eclipses (Espenak & Meeus).

Shadow cone & geoid intersection

The path is built by the MoonShadow → GeoidIntersect pipeline — the same geometry astronomy-engine uses internally for global eclipse search, not the classical Besselian fundamental-plane elements. In outline:

Shadow axis: a line running from the Sun through the Moon, direction dir = moon − sun. The geocentre's projection onto that axis gives a parameter u and a perpendicular miss-distance r.
Cone radii: the umbral radius along the axis is k = R_sun − (1+u)·(R_sun − R_moon) and the penumbral radius is p = −R_sun + (1+u)·(R_sun + R_moon), with R_sun = 695 700 km and R_moon = 1737.4 km.
Geoid intersection: the axis is intersected with the WGS84 ellipsoid (equatorial radius 6378.1366 km, flattening factor 0.9966472) by scaling the z-axis to a sphere and solving the resulting quadratic A·u² + B·u + C = 0; the near root is the ground point. Longitude is de-rotated by Greenwich Apparent Sidereal Time.

Total vs annular classification

Whether the eclipse is total or annular is decided by the umbral cone radius at the actual surface intersection point, not at closest approach to Earth's centre. Using the Moon's polar radius (1736 km, the value astronomy-engine uses for this test), the code evaluates k_surface = R_sun − (1+u)·(R_sun − 1736) and classifies:

Total when k_surface > 0.014 km (the umbra tip reaches below the ground — the Espenak-parity threshold),
Annular otherwise (the antumbra falls short, leaving a ring of Sun).

The shadow-axis miss-distance is reported as gamma, γ = r / R_earth in Earth radii; when the axis misses the globe entirely the event is partial-only.

Topocentric magnitude

Eclipse magnitude is the ratio of the Moon's apparent angular radius to the Sun's, mag = θ_moon / θ_sun. Crucially it uses topocentric distances — the Sun and Moon distances as seen from the greatest-eclipse ground point via Astronomy.Equator(..., observer) — because a surface observer sits about one Earth radius closer to the Moon than the geocentre, and a geocentric figure understates magnitude by roughly 1.5–1.7%.

The positions are sub-arcsecond and the ground path is sub-kilometre for 1900–2200, but this is a visualisation, not a substitute for official predictions: for mission-critical timing, cross-check eclipse.gsfc.nasa.gov.

Apoapsis — 3D rocket orbital mechanics.
Biosphere Blue — planet-scale geosim.

Eclipse Predictor

Controls

What you see

How it works

Accuracy

VIEW

OVERLAYS

YOUR LOCATION

DETAIL