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Astronomical Calendar 2027

Interesting astronomical events from recent years and the years ahead.

20262028
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January

Quadrantid Meteor Shower 2027
Meteor Shower

Quadrantid Meteor Shower 2027

Jan 3 – 4, 2027

The Quadrantid meteor shower originates from the asteroid 2003 EH1. The shower was first recorded in 1825. The Quadrantids are active from December 28, 2026 – January 12, 2027, peaking on the night of January 3 and the morning of January 4 with up to 80 meteors per hour under ideal conditions. This meteor shower is best observed if you are patient and watch from after midnight until just before dawn, from a dark location far from city lights. The radiant of this meteor shower is in the constellation Boötes, but meteors can appear anywhere in the sky.

Venus at Greatest Western Elongation 2027
Planetary Event

Venus at Greatest Western Elongation 2027

Jan 3, 2027

Venus reaches its greatest western elongation of 47 degrees from the Sun. This is the best time to observe Venus, when it is at its highest point above the horizon in the morning. Look for a bright, prominent dot in the eastern sky just before sunrise – that is Venus.

Full Wolf Moon, Super Full Moon 2027
Full Moon

Full Wolf Moon, Super Full Moon 2027

Jan 22, 2027

The Moon will be in opposition, with its surface reflecting the maximum amount of sunlight toward Earth. This phase occurs at 12:17 UTC. This Full Moon is called the Wolf Moon, as wolves were often heard howling during the deep winter nights of January. This Full Moon is a supermoon because it occurs when the Moon is at its closest point to Earth in its elliptical orbit, making it appear slightly larger and brighter than usual.

February

Mercury at Greatest Eastern Elongation 2027
Planetary Event

Mercury at Greatest Eastern Elongation 2027

Feb 3, 2027

Mercury reaches its greatest eastern elongation of 18.3 degrees from the Sun. This is a rare chance to see the planet in a dark sky, when it is at its highest point above the western horizon. Look to the west just after sunset and you may spot a small but noticeable bright dot – that is Mercury.

Annular Solar Eclipse 2027
Solar Eclipse

Annular Solar Eclipse 2027

Feb 6, 2027

A solar eclipse occurs when the Moon passes between the Earth and the Sun, blocking part or all of the Sun’s light as seen from Earth. This phenomenon only happens during the New Moon phase and can only be observed from certain areas on Earth. An annular solar eclipse occurs when the Moon is too far from the Earth to completely cover the Sun, creating a bright ring of light surrounding the Moon at the maximum phase. This solar eclipse will be visible in Much of Africa, South America, Pacific, Atlantic, Antarctica.

Jupiter at Opposition 2027
Planetary Event

Jupiter at Opposition 2027

Feb 10, 2027

At opposition, Jupiter, the Earth and the Sun are almost aligned. The planet’s surface reflects the most sunlight towards Earth, so Jupiter becomes brighter than at any other time of the year and is visible all night long. This is the best time to observe and photograph Jupiter. Through a telescope, you can see the moons of Jupiter.

March

Mercury at Greatest Western Elongation 2027
Planetary Event

Mercury at Greatest Western Elongation 2027

Mar 17, 2027

Mercury reaches its greatest western elongation of 27.6 degrees from the Sun. This is the best time to see the planet in the early morning sky, when it is at its highest point above the eastern horizon. Get up early and look to the east just before sunrise and you may spot a small bright dot – that is Mercury.

March Equinox 2027
Solar Event

March Equinox 2027

Mar 20, 2027

The March Equinox is the moment when the Sun crosses the celestial equator from south to north. The Sun shines directly on the equator, meaning its light is distributed almost equally between the two hemispheres. As a result, day and night are nearly equal in length all over the world.

Full Worm Moon 2027
Full Moon

Full Worm Moon 2027

Mar 22, 2027

The Moon will be in opposition, with its surface reflecting the maximum amount of sunlight toward Earth. This phase occurs at 10:43 UTC. This Full Moon is called the Worm Moon, because the ground begins to thaw and earthworms emerge, signaling the arrival of spring.

April

Full Pink Moon 2027
Full Moon

Full Pink Moon 2027

Apr 20, 2027

The Moon will be in opposition, with its surface reflecting the maximum amount of sunlight toward Earth. This phase occurs at 22:27 UTC. This Full Moon is called the Pink Moon, named after pink wildflowers such as phlox that bloom in early spring — not because the Moon itself appears pink.

Lyrid Meteor Shower 2027
Meteor Shower

Lyrid Meteor Shower 2027

Apr 21 – 22, 2027

The Lyrid meteor shower originates from Comet C/1861 G1 (Thatcher). The comet was discovered in 1861. The Lyrids are active from April 14 – 30, 2027, peaking on the night of April 21 and the morning of April 22 with up to 18 meteors per hour under ideal conditions. This meteor shower is best observed if you are patient and watch from after midnight until just before dawn, from a dark location far from city lights. The radiant of this meteor shower is in the constellation Lyra, but meteors can appear anywhere in the sky.

May

Eta Aquariid Meteor Shower 2027
Meteor Shower

Eta Aquariid Meteor Shower 2027

May 5 – 6, 2027

The Eta Aquariid meteor shower originates from Comet Halley. The comet has been observed since ancient times. The Eta Aquariids are active from April 19 – May 28, 2027, peaking on the night of May 5 and the morning of May 6 with up to 50 meteors per hour under ideal conditions. This meteor shower is best observed if you are patient and watch from after midnight until just before dawn, from a dark location far from city lights. The radiant of this meteor shower is in the constellation Aquarius, but meteors can appear anywhere in the sky.

Full Blue Moon 2027
Full Moon

Full Blue Moon 2027

May 20, 2027

The Moon will be in opposition, with its surface reflecting the maximum amount of sunlight toward Earth. This phase occurs at 10:59 UTC. This Full Moon is called a Blue Moon, because this is the third Full Moon in a season with four Full Moons.

Mercury at Greatest Eastern Elongation 2027
Planetary Event

Mercury at Greatest Eastern Elongation 2027

May 28, 2027

Mercury reaches its greatest eastern elongation of 22.9 degrees from the Sun. This is a rare chance to see the planet in a dark sky, when it is at its highest point above the western horizon. Look to the west just after sunset and you may spot a small but noticeable bright dot – that is Mercury.

June

Full Strawberry Moon 2027
Full Moon

Full Strawberry Moon 2027

Jun 19, 2027

The Moon will be in opposition, with its surface reflecting the maximum amount of sunlight toward Earth. This phase occurs at 00:44 UTC. This Full Moon is called the Strawberry Moon, named for the short strawberry harvest season. In Europe, it is sometimes called the Rose Moon.

June Solstice 2027
Solar Event

June Solstice 2027

Jun 21, 2027

The June Solstice is the time when the Sun reaches its farthest position north of the celestial equator and shines almost directly overhead at the Tropic of Cancer. The Northern Hemisphere receives the most sunlight of the year, resulting in the longest day and the shortest night there, while the Southern Hemisphere experiences its shortest day.

July

Mercury at Greatest Western Elongation 2027
Planetary Event

Mercury at Greatest Western Elongation 2027

Jul 15, 2027

Mercury reaches its greatest western elongation of 20.7 degrees from the Sun. This is the best time to see the planet in the early morning sky, when it is at its highest point above the eastern horizon. Get up early and look to the east just before sunrise and you may spot a small bright dot – that is Mercury.

Full Buck Moon, Micro Full Moon 2027
Full Moon

Full Buck Moon, Micro Full Moon 2027

Jul 18, 2027

The Moon will be in opposition, with its surface reflecting the maximum amount of sunlight toward Earth. This phase occurs at 15:44 UTC. This Full Moon is called the Buck Moon, because bucks grow new antlers covered in soft velvet. This Full Moon is a micromoon because it occurs when the Moon is at its farthest point from Earth in its elliptical orbit, making it appear slightly smaller and dimmer than usual.

Southern Delta Aquariid Meteor Shower 2027
Meteor Shower

Southern Delta Aquariid Meteor Shower 2027

Jul 30 – 31, 2027

The Southern Delta Aquariid meteor shower originates from Comet 96P/Machholz. The comet was discovered in 1986. The Southern Delta Aquariids are active from July 12 – August 23, 2027, peaking on the night of July 30 and the morning of July 31 with up to 25 meteors per hour under ideal conditions. This meteor shower is best observed if you are patient and watch from after midnight until just before dawn, from a dark location far from city lights. The radiant of this meteor shower is in the constellation Aquarius, but meteors can appear anywhere in the sky.

August

Total Solar Eclipse 2027
Solar Eclipse

Total Solar Eclipse 2027

Aug 2, 2027

A solar eclipse occurs when the Moon passes between the Earth and the Sun, blocking part or all of the Sun’s light as seen from Earth. This phenomenon only happens during the New Moon phase and can only be observed from certain areas on Earth. A total solar eclipse occurs when the Moon completely covers the Sun, revealing the Sun’s outer atmosphere known as the corona. This solar eclipse will be visible in Europe, South/West Asia, Africa, East in North America, Atlantic, Indian Ocean.

Perseid Meteor Shower 2027
Meteor Shower

Perseid Meteor Shower 2027

Aug 12 – 13, 2027

The Perseid meteor shower originates from Comet Swift-Tuttle. The comet was discovered in 1862. The Perseids are active from July 17 – August 24, 2027, peaking on the night of August 12 and the morning of August 13 with up to 110 meteors per hour under ideal conditions. This meteor shower is best observed if you are patient and watch from after midnight until just before dawn, from a dark location far from city lights. The radiant of this meteor shower is in the constellation Perseus, but meteors can appear anywhere in the sky.

Penumbral Lunar Eclipse 2027
Lunar Eclipse

Penumbral Lunar Eclipse 2027

Aug 16 – 17, 2027

A lunar eclipse occurs when the Earth is positioned between the Sun and the Moon, causing the Earth’s shadow to cover the Moon. This phenomenon only happens during the Full Moon phase. A penumbral lunar eclipse occurs when the Moon only passes through the Earth’s penumbral shadow, causing a slight dimming. It is often difficult to notice with the naked eye. This lunar eclipse will be visible in West in Europe, North in Asia, Much of Australia, North/West Africa, North America, South America, Pacific, Atlantic, Antarctica.

September

Full Corn Moon 2027
Full Moon

Full Corn Moon 2027

Sep 15, 2027

The Moon will be in opposition, with its surface reflecting the maximum amount of sunlight toward Earth. This phase occurs at 23:03 UTC. This Full Moon is called the Corn Moon, as it coincides with the corn harvest season in many agricultural societies.

September Equinox 2027
Solar Event

September Equinox 2027

Sep 23, 2027

The September Equinox is the moment when the Sun crosses the celestial equator from north to south. The Sun shines directly on the equator, and sunlight is distributed almost equally between the two hemispheres. As a result, day and night are nearly equal in length all around the world.

Mercury at Greatest Eastern Elongation 2027
Planetary Event

Mercury at Greatest Eastern Elongation 2027

Sep 24, 2027

Mercury reaches its greatest eastern elongation of 26.3 degrees from the Sun. This is a rare chance to see the planet in a dark sky, when it is at its highest point above the western horizon. Look to the west just after sunset and you may spot a small but noticeable bright dot – that is Mercury.

Neptune at Opposition 2027

October

Full Hunters Moon 2027
Full Moon

Full Hunters Moon 2027

Oct 15, 2027

The Moon will be in opposition, with its surface reflecting the maximum amount of sunlight toward Earth. This phase occurs at 13:47 UTC. This Full Moon is called the Hunters Moon, traditionally marking the time to hunt game in preparation for the coming winter.

Saturn at Opposition 2027
Planetary Event

Saturn at Opposition 2027

Oct 18, 2027

At opposition, Saturn, the Earth and the Sun are almost aligned. The planet’s surface reflects the most sunlight towards Earth, so Saturn becomes brighter than at any other time of the year and is visible all night long. This is the best time to observe and photograph Saturn. Through a telescope, you can clearly see the beautiful rings of Saturn.

Orionid Meteor Shower 2027
Meteor Shower

Orionid Meteor Shower 2027

Oct 21 – 22, 2027

The Orionid meteor shower originates from Comet Halley. The comet has been observed since ancient times. The Orionids are active from October 2 – November 7, 2027, peaking on the night of October 21 and the morning of October 22 with up to 20 meteors per hour under ideal conditions. This meteor shower is best observed if you are patient and watch from after midnight until just before dawn, from a dark location far from city lights. The radiant of this meteor shower is in the constellation Orion, but meteors can appear anywhere in the sky.

November

Mercury at Greatest Western Elongation 2027
Planetary Event

Mercury at Greatest Western Elongation 2027

Nov 4, 2027

Mercury reaches its greatest western elongation of 18.8 degrees from the Sun. This is the best time to see the planet in the early morning sky, when it is at its highest point above the eastern horizon. Get up early and look to the east just before sunrise and you may spot a small bright dot – that is Mercury.

Full Beaver Moon 2027
Full Moon

Full Beaver Moon 2027

Nov 14, 2027

The Moon will be in opposition, with its surface reflecting the maximum amount of sunlight toward Earth. This phase occurs at 03:25 UTC. This Full Moon is called the Beaver Moon, because beavers build their dams and prepare for winter, and historically it was the best time to set beaver traps.

Leonid Meteor Shower 2027
Meteor Shower

Leonid Meteor Shower 2027

Nov 17 – 18, 2027

The Leonid meteor shower originates from Comet Tempel-Tuttle. The comet was discovered in 1865. The Leonids are active from November 6 – 30, 2027, peaking on the night of November 17 and the morning of November 18 with up to 15 meteors per hour under ideal conditions. This meteor shower is best observed if you are patient and watch from after midnight until just before dawn, from a dark location far from city lights. The radiant of this meteor shower is in the constellation Leo, but meteors can appear anywhere in the sky.

December

Full Cold Moon 2027
Full Moon

Full Cold Moon 2027

Dec 13, 2027

The Moon will be in opposition, with its surface reflecting the maximum amount of sunlight toward Earth. This phase occurs at 16:08 UTC. This Full Moon is called the Cold Moon, as it occurs during the long, cold nights of early winter.

Geminid Meteor Shower 2027
Meteor Shower

Geminid Meteor Shower 2027

Dec 14 – 15, 2027

The Geminid meteor shower originates from the asteroid 3200 Phaethon. The asteroid was discovered in 1983. The Geminids are active from December 4 – 20, 2027, peaking on the night of December 14 and the morning of December 15 with up to 150 meteors per hour under ideal conditions. This meteor shower is best observed if you are patient and watch from after midnight until just before dawn, from a dark location far from city lights. The radiant of this meteor shower is in the constellation Gemini, but meteors can appear anywhere in the sky.

Ursid Meteor Shower 2027
Meteor Shower

Ursid Meteor Shower 2027

Dec 22 – 23, 2027

The Ursid meteor shower originates from Comet 8P/Tuttle. The comet was discovered in 1790. The Ursids are active from December 17 – 26, 2027, peaking on the night of December 22 and the morning of December 23 with up to 10 meteors per hour under ideal conditions. This meteor shower is best observed if you are patient and watch from after midnight until just before dawn, from a dark location far from city lights. The radiant of this meteor shower is in the constellation Ursa Minor, but meteors can appear anywhere in the sky.

Mars at Opposition 2027
Planetary Event

Mars at Opposition 2027

Feb 19, 2027

At opposition, Mars, the Earth and the Sun are almost aligned. The planet’s surface reflects the most sunlight towards Earth, so Mars becomes brighter than at any other time of the year and is visible all night long. This is the best time to observe and photograph Mars. Through a telescope, you can see the dark surface features of Mars.

Penumbral Lunar Eclipse 2027
Lunar Eclipse

Penumbral Lunar Eclipse 2027

Feb 20 – 21, 2027

A lunar eclipse occurs when the Earth is positioned between the Sun and the Moon, causing the Earth’s shadow to cover the Moon. This phenomenon only happens during the Full Moon phase. A penumbral lunar eclipse occurs when the Moon only passes through the Earth’s penumbral shadow, causing a slight dimming. It is often difficult to notice with the naked eye. This lunar eclipse will be visible in Europe, Asia, North/West Australia, Africa, Much of North America, South America, Pacific, Atlantic, Indian Ocean, Arctic, Antarctica.

Full Snow Moon, Penumbral Lunar Eclipse 2027
Full Moon

Full Snow Moon, Penumbral Lunar Eclipse 2027

Feb 20, 2027

The Moon will be in opposition, with its surface reflecting the maximum amount of sunlight toward Earth. This phase occurs at 23:23 UTC. This Full Moon is called the Snow Moon, as February typically sees the heaviest snowfall in the Northern Hemisphere. In addition, this Full Moon will also coincide with a penumbral lunar eclipse, when the Moon enters the Earth’s penumbral shadow. At this time, the Moon only appears dimmer.

Full Sturgeon Moon, Micro Full Moon 2027
Full Moon

Full Sturgeon Moon, Micro Full Moon 2027

Aug 17, 2027

The Moon will be in opposition, with its surface reflecting the maximum amount of sunlight toward Earth. This phase occurs at 07:28 UTC. This Full Moon is called the Sturgeon Moon, named after the large sturgeon fish that were most easily caught during this month in the Great Lakes and other major bodies of water. This Full Moon is a micromoon because it occurs when the Moon is at its farthest point from Earth in its elliptical orbit, making it appear slightly smaller and dimmer than usual.

Planetary Event

Neptune at Opposition 2027

Sep 28, 2027

At opposition, Neptune, the Earth and the Sun are almost aligned. The planet’s surface reflects the most sunlight towards Earth, so Neptune becomes brighter than at any other time of the year and is visible all night long. This is the best time to observe and photograph Neptune. Because it is so far away, Neptune only appears as a small blue dot through a telescope.

Uranus at Opposition 2027
Planetary Event

Uranus at Opposition 2027

Nov 30, 2027

At opposition, Uranus, the Earth and the Sun are almost aligned. The planet’s surface reflects the most sunlight towards Earth, so Uranus becomes brighter than at any other time of the year and is visible all night long. This is the best time to observe and photograph Uranus. Because it is so far away, Uranus only appears as a small blue-green dot through a telescope.

December Solstice 2027
Solar Event

December Solstice 2027

Dec 22, 2027

The December Solstice is the time when the Sun reaches its farthest position south of the celestial equator and shines directly over the Tropic of Capricorn. The Northern Hemisphere receives the least amount of sunlight of the year, resulting in the shortest day and the longest night there, while the Southern Hemisphere experiences its longest day.