How Often Do Solar Eclipses Occur? - Time And Date

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timeanddate.com Sign in Home Sun, Moon & Space Eclipses How Often? How Often Do Solar Eclipses Occur?

By Aparna Kher

There are betweentwo and five solar eclipses every year, each visible only in a limited area.

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Next Total Solar Eclipse: T4 12 Tháng tám 2026 p. … See animation

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How Many Eclipses in a Year?

Most calendar years have two solar eclipses. The maximum number of solar eclipses that can take place in the same year is five, but this is rare. According to NASA calculations, only about 25 years in the past 5,000 years have had five solar eclipses. The last time this happened was in 1935, and the next time will be in 2206.

List Solar Eclipses 1900–2199

Eclipse frequencies: New data for an old question

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Types of Solar Eclipses

There are three main types of solar eclipses:

  1. total solar eclipses
  2. annular eclipses
  3. partial solar eclipses

In addition, there are hybrid solar eclipses, also called annular-total eclipses, when an annular eclipse changes into a total eclipse, or vice versa.

When Does a Solar Eclipse Occur?

Illustration of lunar nodes with Sun, Earth, and Moon Illustration of lunar nodes with Sun, Earth, and Moon

Lunar nodes are the locations where the Moon crosses the Earth's orbital plane.

Solar eclipses only occur around the New Moon because of the alignment of Earth, the Moon, and the Sun which happens at that time. But this does not mean that eclipses of the Sun happen every New Moon.

The New Moon also has to be near a lunar node. This can only happen during a period of time that occurs a little less than every six months, and lasts, on average, around 34.5 days. This period is called the eclipse season, and it is the only time that eclipses take place.

The lunar nodes are the two points where the plane of the Moon's orbital path around Earth meets Earth's orbital plane around the Sun, the ecliptic. The plane of the Moon's path around the Earth is inclined at an angle of approximately 5° to the ecliptic.

How Earth’s rotation affects eclipse paths

Solar Vs. Lunar Eclipses

Even though solar eclipses occur every year, they are considered a rare sight, much rarer than a lunar eclipse. This is because while a solar eclipse is only visible from a very narrow path on Earth, a lunar eclipse is visible from every location on the night side of the Earth while it lasts.

Total Eclipse in the US

On August 21, 2017, a total solar eclipse was visible in a narrow track spanning the United States. This was the first total solar eclipse visible from anywhere in mainland United States since the total solar eclipse in February 1979. There was also a total eclipse in the US in April 2024, and the next one will be in March 2033.

Look up eclipses by location

On average, it takes about 375 years for a total solar eclipse to happen again at the same location. By comparison, a total lunar eclipse, also known as a Blood Moon, can be seen from any location approximately every 2.5 years.

On average, there are about 240 solar eclipses and a similar number of lunar eclipses each century.

How Often Do Solar and Lunar Eclipses Occur

Most years have four eclipses: the minimum number of eclipses in a year; 2 of these four eclipses are always solar eclipses. While rare, the maximum number of eclipses that can take place in a calendar year is seven.

There are two or three eclipses during every eclipse season. At least one of these is always a solar eclipse, sometimes two. The same is true for lunar eclipses. Which order they come in depends on how each eclipse season coincides with the lunar (synodic) month.

The lunar month is the period it takes the Moon to go through all the Moon Phases from a New Moon to the next, and it lasts, on average, 29.5 days. This is five days less than an eclipse season. Therefore, there will always be at least one New Moon, resulting in a solar eclipse, and at least one Full Moon, resulting in a lunar eclipse, during each eclipse season.

This is also why solar and lunar eclipses come in pairs—a solar eclipse always takes place either about two weeks before or after a lunar eclipse, and vice versa.

At most, there can be two New Moons and one Full Moon, or two Full Moons and one New Moon in the same eclipse season.

List all eclipses Worldwide

Similar Eclipses Every 18 Years

Solar eclipses occur in cycles, called eclipse cycles.

One of the most popularly studied eclipse cycles is the Saros cycle, which the ancient Babylonians used to predict lunar eclipses.

The Saros cycle is approximately 6,585.3 days, or around 18 years, 11 days, and 8 hours long, and it occurs due to a combination of three lunar cycles:

  • The lunar (synodic) month: the time it takes from one New Moon to the next.
  • The anomalistic month: the time it takes from Moon perigee to perigee, the point of the Moon's orbit closest to Earth.
  • The draconic month: the time it takes from one lunar node to another. Also called the nodical month, it lasts, on average, 27.212220 days ( i.e. 27 days, 5 hours, 5 minutes, and 35.8 seconds).

Two solar eclipses separated by a Saros cycle have certain similarities: they occur at the same lunar node, with the Moon roughly at the same distance from Earth, and they take place around the same time of the year.

The path of totality for the eclipses also looks very similar on a map—with one important difference. The path of totality is shifted westwards, one-third of the way around the globe. This is due to the fraction 0.3 in the Saros period of 6,585.3 days. During this one third of a day, the Earth spins on its axis, meaning the eclipse takes place further to the west.

Upcoming 5 Solar Eclipses

12 Tháng tám 2026 p.Solar Eclipse (Total)Europe, North in Asia, North/West Africa, Much of North America, Pacific, Atlantic, Arctic06 Tháng hai 2027 p.Solar Eclipse (Annular)Much of Africa, South America, Pacific, Atlantic, Antarctica02 Tháng tám 2027 p.Solar Eclipse (Total)Europe, South/West Asia, Africa, East in North America, Atlantic, Indian Ocean26 Tháng một 2028 p.Solar Eclipse (Annular)South/West Europe, North/West Africa, South/East North America, South America, Pacific, Atlantic22 Tháng bảy 2028 p.Solar Eclipse (Total)South in Asia, Australia, Pacific, Indian Ocean, Antarctica

More details about upcoming Eclipses

Topics: Astronomy, Moon, Sun, Eclipses

Next Total Solar Eclipse

153Days 3Hrs 48Mins 0Secs

Total Solar Eclipse

12 Tháng tám 2026 p. 15:34 UTC … See more

Eclipse Lookup

Solar Eclipses
  1. When Is the Next Solar Eclipse?
  2. Different Types of Eclipses
  3. What Are Solar Eclipses?
  4. How Often Do Solar Eclipses Occur?
  5. Total Solar Eclipses
  6. What Happens at a Total Solar Eclipse?
  7. Partial Solar Eclipses
  8. Annular Solar Eclipses
  9. What Happens at an Annular Eclipse?
  10. Hybrid Solar Eclipses
  11. Eclipse Seasons
  12. Solar Eclipses in History
  13. Solar Eclipse Myths
  14. Magnitude of Eclipses
  15. Accuracy of Our Eclipse Calculations

Eclipses

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PDF Infographic: Types of Eclipses

Infographic on the different Types of Solar Eclipse, what they are and why they happen.

Protect Your Eyes
  1. Never Look Directly at the Sun
  2. How to Use Eclipse Glasses
  3. Simple Pinhole Projector
  4. Eclipse Projector in a Box
  5. Binoculars / Telescope Projector

Eclipses & Transits

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PDF Guide: How to View a Solar Eclipse

Sunglasses don't work! Print our guide to protecting your eyes to safely see a solar eclipse.

Eclipse Shadows
  1. Umbra
  2. Penumbra
  3. Antumbra

Why Are There 3 Shadows?

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