Almanac · Eclipses
Total solar eclipse, 2 Aug 2027
The Moon covers the whole Sun along a narrow path, and a partial eclipse falls either side of it. Greatest eclipse is on Mon 2 Aug 2027 at 10:06 UTC.
Never look at the Sun without eclipse glasses, except in the minutes of totality itself.
- Greatest eclipse At 25.5°N 33.1°E, the Sun 82° up
- Magnitude 1.079 The Moon’s apparent diameter over the Sun’s there
- Longest Totality 6m24s At the point of greatest eclipse
- Gamma 0.1418 The shadow’s axis from the Earth’s centre, in Earth radii
Where to watch it
Luxor, Egypt has the longest total phase of any city on our list: 6m23s, with the Sun 82° up. The Moon first touches the Sun there at 11:40 local time (GMT+3).
The Sky Map opens in Luxor at 11:30 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 total 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.
- Luxor, Egypt Total for 6m23s, the Sun 82° up Begins · Deepest · Ends GMT+3 Watch from here
- Benghazi, Libya Total for 6m10s, the Sun 68° up Begins · Deepest · Ends GMT+2 Watch from here
- Jeddah, Saudi Arabia Total for 5m55s, the Sun 76° up Begins · Deepest · Ends GMT+3 Watch from here
- Oran, Algeria Total for 5m09s, the Sun 43° up Begins · Deepest · Ends GMT+1 Watch from here
- Tangier, Morocco Total for 4m51s, the Sun 38° up Begins · Deepest · Ends GMT+0 Watch from here
- Sana'a, Yemen Total for 2m50s, the Sun 67° up Begins · Deepest · Ends GMT+3 Watch from here
- Tripoli, Libya Total for 59s, the Sun 60° up Begins · Deepest · Ends GMT+2 Watch from here
- Cairo, Egypt 95% of the Sun hidden, the Sun 78° up Begins · Deepest · Ends GMT+3 Watch from here
- Istanbul, Turkey 59% of the Sun hidden, the Sun 66° up Begins · Deepest · Ends GMT+3 Watch from here
- Mumbai, India 32% of the Sun hidden, the Sun 34° up Begins · Deepest · Ends GMT+5:30 Watch from here
- Karachi, Pakistan 29% of the Sun hidden, the Sun 43° up Begins · Deepest · Ends GMT+5 Watch from here
- Moscow, Russia 9% of the Sun hidden, the Sun 52° up Begins · Deepest · Ends GMT+3 Watch from here
- Delhi, India 8% of the Sun hidden, the Sun 34° up Begins · Deepest · Ends GMT+5:30 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 | from 69°W to 47°E | 09:01 | 0.264 | Partial: at most 16% of the Sun hidden, at 6°W, the Sun 34° up |
| 45°N | from 66°W to 69°E | 08:53 | 0.728 | Partial: at most 67% of the Sun hidden, at 3°W, the Sun 39° up |
| 30°N | from 58°W to 87°E | 09:43 | 1.039 | Total at 25°E for 6m20s, the Sun 74° up |
| 15°N | from 51°W to 110°E | 10:49 | 1.039 | Total at 46°E for 5m51s, the Sun 64° up |
| 0° | from 40°W to 30°W and from 15°E to 107°E | 11:32 | 1.035 | Total at 65°E for 4m26s, the Sun 32° up |
| 15°S | from 34°E to 102°E | 11:48 | 0.948 | Partial: at most 95% of the Sun hidden, at 90°E, the Sun 0° up |
| 30°S | from 54°E to 94°E | 11:46 | 0.415 | Partial: at most 31% of the Sun hidden, at 85°E, the Sun -1° up |
| 45°S | Not seen | — | — | Not seen: the Moon’s shadow misses this latitude while the Sun is 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 total 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)