Almanac · Eclipses
Annular solar eclipse, 6 Feb 2027
The Moon is too far to cover the whole Sun, and leaves a ring of it along a narrow path, with a partial eclipse either side. Greatest eclipse is on Sat 6 Feb 2027 at 15:59 UTC.
Never look at the Sun without eclipse glasses.
- Greatest eclipse At 31.3°S 48.5°W, the Sun 73° up
- Magnitude 0.928 The Moon’s apparent diameter over the Sun’s there
- Longest Annularity 7m47s At the point of greatest eclipse
- Gamma -0.2951 The shadow’s axis from the Earth’s centre, in Earth radii
Where to watch it
Necochea, Argentina has the longest annular phase of any city on our list: 7m38s, with the Sun 65° up. The Moon first touches the Sun there at 10:43 local time (GMT-3).
The Sky Map opens in Necochea at 10:33 GMT-3 there, on the Sun: press play on the time bar to watch it unfold. Your own place stays as it is.
City by city
The biggest cities on our list in the path, the longest annular phase first, then the biggest that see at least 5% of the Sun hidden, the most first. Every time is the city’s own clock.
- Necochea, Argentina Annular for 7m38s, the Sun 65° up Begins · Deepest · Ends GMT-3 Watch from here
- Mar del Plata, Argentina Annular for 7m34s, the Sun 66° up Begins · Deepest · Ends GMT-3 Watch from here
- Lagos, Nigeria Annular for 5m34s, the Sun 0° up Begins · Deepest · Ends GMT+1 Watch from here
- Accra, Ghana Annular for 5m30s, the Sun 4° up Begins · Deepest · Ends GMT Watch from here
- Maldonado, Uruguay Annular for 5m17s, the Sun 70° up Begins · Deepest · Ends GMT-3 Watch from here
- Bahía Blanca, Argentina Annular for 4m07s, the Sun 63° up Begins · Deepest · Ends GMT-3 Watch from here
- Grand-Bassam, Côte d'Ivoire Annular for 3m13s, the Sun 7° up Begins · Deepest · Ends GMT Watch from here
- São Paulo, Brazil 78% of the Sun hidden, the Sun 74° up Begins · Deepest · Ends GMT-3 Watch from here
- Salvador, Brazil 74% of the Sun hidden, the Sun 58° up Begins · Deepest · Ends GMT-3 Watch from here
- Santiago, Chile 62% of the Sun hidden, the Sun 59° up Begins · Deepest · Ends GMT-3 Watch from here
- Kano, Nigeria 38% of the Sun hidden, the Sun 0° up Begins · Deepest · Ends GMT+1 Watch from here
- Kinshasa, DR Congo 34% of the Sun hidden, the Sun 0° up Begins · Deepest · Ends GMT+1 Watch from here
- Casablanca, Morocco 5% of the Sun hidden, the Sun 0° up Begins · Deepest · Ends GMT+0 Watch from here
Latitude by latitude
Along each latitude, the longitudes that see any of the eclipse with the Sun up, and where on that latitude it is deepest: how much of the Sun’s face is hidden there, when, and how high the Sun stands.
| Latitude | Seen | Deepest (UTC) | Magnitude | At its deepest |
|---|---|---|---|---|
| 60°N | Not seen | — | — | Not seen: the Moon’s shadow misses this latitude while the Sun is up |
| 45°N | Not seen | — | — | Not seen: the Moon’s shadow misses this latitude while the Sun is up |
| 30°N | from 29°W to 5°E | 17:55 | 0.249 | Partial: at most 14% of the Sun hidden, at 4°W, the Sun -1° up |
| 15°N | from 50°W to 16°E | 17:55 | 0.703 | Partial: at most 61% of the Sun hidden, at 1°E, the Sun -1° up |
| 0° | from 64°W to 23°E | 17:45 | 0.960 | Annular at 12°W for 6m08s, the Sun 19° up |
| 15°S | from 132°W to 28°E | 17:04 | 0.963 | Annular at 32°W for 7m05s, the Sun 51° up |
| 30°S | from 142°W to 32°E | 16:05 | 0.964 | Annular at 47°W for 7m45s, the Sun 72° up |
| 45°S | from 152°W to 12°E | 14:19 | 0.960 | Annular at 100°W for 6m34s, the Sun 26° up |
How we worked it out: the Sun’s and the Moon’s places are Meeus’s solar and lunar theories, the ones the map draws. Greatest eclipse is the instant the shadow’s axis passes nearest the Earth’s centre, and the magnitude and the length of the annular phase are measured from the place it meets the ground. Each latitude is walked 1° of longitude at a time on the Moon’s shadow cones, every 2 minutes, then refined where the eclipse is deepest with the Sun up. The tests hold these to NASA’s Five Millennium Canon of eclipses: instants within a few minutes, magnitudes within a few thousandths, the central duration within seconds.
- F. Espenak and J. Meeus, NASA Five Millennium Canon of Solar and Lunar Eclipses, which the tests hold these to
- J. Meeus, Astronomical Algorithms, ch. 25 (the Sun) and ch. 47 (the Moon), as the map draws them
- Danjon’s rule for the Earth’s shadow, as NASA’s lunar eclipse catalogue applies it (NASA/TP-2009-214172, §1.3)