The next eclipse is a faint one on Sat 20 Feb 2027. The great one is a total eclipse of the Sun over Georgetown on Sat 12 Aug 2045

Georgetown, Guyana · times in GMT-4.

Next total lunar eclipse: the night of 25/26 Jun 2029, 103 of 103 minutes of totality visible.

Next solar eclipse: Wed 26 Jan 2028, 69.87% of the Sun covered at Georgetown.

12 August 2045, town by town

At about 14:45 GMT-4 Georgetown sees about 4 min 50 s of totality with the Sun 48° high. Totality crosses eight of the ten regional towns, all except Mahdia (97.67%) and Lethem (90.46%).

Durations are NASA predictions. They assume NASA's forecast of Earth's rotation, so times may shift by up to about half a minute and durations by a few seconds.

Every eclipse in detail

Four eclipse kinds come from NASA instead of the engine, which has no hybrid kind and calls two non-central eclipses partial: 2031-11-14 solar is hybrid; 2042-09-29 lunar is penumbral; 2043-04-09 solar is total, non-central; 2043-10-03 solar is annular, non-central. Only the 2042 one is above Guyana's horizon, as subtle shading.

How eclipses work

A lunar eclipse happens when the full Moon passes through Earth's shadow. Everyone on the night side of Earth sees it at the same moment, so every town in Guyana sees the same eclipse. Only moonrise and moonset differ from town to town, and they decide how much of it each town catches.

A solar eclipse happens when the new Moon passes in front of the Sun. The Moon's shadow is small, so the view changes from place to place. That is why the solar rows on this page give a number for each town.

Kinds of eclipse

• Penumbral lunar: the Moon passes through the outer, faint part of Earth's shadow. It dims only slightly. It is real, but it is hard to notice.
• Partial lunar: part of the Moon enters the dark inner shadow (the umbra) and looks bitten.
• Total lunar: the whole Moon is inside the umbra. It often turns copper or red.
• Partial solar: the Moon covers part of the Sun.
• Annular solar: the Moon is too small to cover the Sun and leaves a ring of sunlight. Only places inside a narrow path see the ring.
• Total solar: the Moon covers the whole Sun and the sky goes dark for a few minutes. Only places inside the path of totality see it.

Coverage and magnitude

Coverage on these pages is the obscuration: the share of the Sun's area that the Moon hides. NASA also quotes the eclipse magnitude: the share of the Sun's diameter that is covered. At Georgetown on 26 January 2028 the magnitude is 0.780, while the area hidden is 69.87%. They are different numbers, so this page never mixes them.

How the catalogue was made

• Every eclipse from 2026 to 2045 was computed with astronomy-engine 2.1.19 for the ten regional towns, one in each region.
• Peak times agree with the NASA GSFC eclipse tables to within 15 seconds.
• For a lunar eclipse, the minutes you can see are clipped by moonrise and moonset, using the Moon's upper edge and normal refraction (the definition the US Naval Observatory uses).
• A solar eclipse counts as seen from a town when at least 1% of the Sun is covered. Smaller grazes are listed as too small to notice.
• Clock times are Guyana time (GMT-4), rounded to the nearest minute. Totality is given to the nearest 10 seconds, because the last few seconds depend on the model.
• The engine has no hybrid kind and misreads two eclipses that miss the Earth's centre, so four kinds come from NASA's tables instead. They are marked on the page.

Safety and weather

Look at the Sun only through a certified ISO 12312-2 solar filter, even when most of it is covered. Sunglasses, smoked glass and phone screens are not safe. A lunar eclipse is safe to watch with your eyes, binoculars or a telescope.

Every eclipse on this page needs a clear sky, so each one is weather permitting.

Sources

• NASA GSFC lunar and solar eclipse decade tables, 2021-2050.
• NASA local circumstances (SEcirc) for 26 January 2028 and 12 August 2045.
• US Naval Observatory rise and set definitions.
• astronomy-engine 2.1.19 (Don Cross, MIT licence).