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Eclipse Calendar

Solar and Lunar Eclipses from 1900 to 2100

Eclipse Calendar PDF

Download the PDF containing all 913 eclipses — for offline reference.

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What is an Eclipse?
A solar eclipse occurs during a New Moon (conjunction) when the Moon passes between the Sun and Earth. A lunar eclipse occurs during a Full Moon (opposition) when Earth's shadow falls on the Moon. Eclipses only happen when the Moon's orbit is close to the ecliptic, near the Lunar Nodes. Therefore, eclipses do not occur at every New Moon or Full Moon, but approximately 4–6 times per year.
Eclipses in Classical Astrology:
Eclipses are considered among the most powerful indicators in classical astrology. Ptolemy states that the effects of eclipses span from months to years, depending on their type and visibility. Solar eclipses have longer-lasting effects. If the zodiac sign and degree of the eclipse are close to sensitive points in the natal chart (especially the luminaries and angles), the personal impact is amplified.

Source and Method

Eclipse dates were obtained through astronomical calculations using the astronomy-engine library. Zodiac positions were calculated based on the ecliptic longitude of the Sun (for solar eclipses) and the Moon (for lunar eclipses) at the moment of the eclipse. Times are in UTC.

Ptolemy, Tetrabiblos (2nd c. AD) · Abu Ma'shar, Kitab al-Mudkhal al-Kabir (9th c.) · Bonatti, Liber Astronomiae (13th c.) · William Lilly, Christian Astrology (1647)

About the Eclipse Calendar

This page presents a comprehensive reference table of all 913 eclipses occurring from 1900 to 2100. The date, type (Solar or Lunar), subtype (Total, Annular, Partial, Penumbral), zodiac sign, and ecliptic degree of each eclipse have been determined through astronomical calculation methods.

The Astronomical Basis of Eclipses

Eclipses occur when the Sun, Earth, and Moon align in a specific geometric configuration. A solar eclipse occurs during the New Moon phase when the Moon passes between the Sun and Earth. A lunar eclipse occurs during the Full Moon phase when Earth's shadow falls on the Moon. Since the Moon's orbital plane is tilted approximately 5.14° from the ecliptic, eclipses do not happen at every New Moon or Full Moon, but only near the Lunar Nodes (North and South Node).

Types of Eclipses

Solar eclipses are divided into three main types: In a total eclipse, the Moon completely covers the Sun and the corona becomes visible. In an annular eclipse, because the Moon is farther away, a bright ring remains around the edge of the Sun. In a partial eclipse, the Moon covers only a portion of the Sun. Lunar eclipses also come in three types: During a total lunar eclipse, the Moon takes on a reddish color (Blood Moon); in a partial eclipse, only part of the Moon is in shadow; in a penumbral eclipse, a subtle dimming is observed.

Astrological Significance

In classical astrology, eclipses are considered among the most powerful cosmic indicators. Ptolemy states in the Tetrabiblos that the effects of eclipses extend from months to years, depending on their type and duration. Medieval astrologers such as Abu Ma'shar and Bonatti also emphasize the critical role of eclipses in mundane astrology (world astrology). If the zodiac sign and degree of an eclipse are close to sensitive points in the natal chart — especially the Sun, Moon, and Ascendant degree — the personal impact is amplified. In electional astrology, it is recommended to avoid important undertakings during eclipse periods.

The Saros Cycle

Eclipses recur in approximately 18-year, 11-day periods known as the Saros cycle. Eclipses within the same Saros series share similar geometric characteristics. This cycle was discovered by ancient Babylonian astronomers and formed the foundation of eclipse prediction.

Frequently Asked Questions

What is an eclipse?

A solar eclipse occurs during a New Moon when the Moon passes between the Sun and Earth. A lunar eclipse occurs during a Full Moon when Earth's shadow falls on the Moon. Eclipses happen only near the Lunar Nodes, approximately 4-6 times per year.

Why doesn't an eclipse happen at every New Moon?

Because the Moon's orbital plane is tilted 5.14° from the ecliptic, the Moon passes slightly above or below the Sun at most New Moons. An eclipse only occurs when the conjunction happens near the Lunar Nodes.

What are the types of eclipses?

Solar eclipses: Total (Sun completely covered), Annular (ring of fire forms), Partial (part of Sun covered). Lunar eclipses: Total (Blood Moon), Partial (part of Moon in shadow), Penumbral (subtle dimming).

How long do the astrological effects of eclipses last?

According to Ptolemy, the effects of solar eclipses are measured in years, while the effects of lunar eclipses are measured in months. The duration of the eclipse represents one year or one month of effect for each hour.

How many eclipses occur between 1900 and 2100?

A total of 913 eclipses occur during this 200-year period. Approximately half are solar eclipses and half are lunar eclipses. An average of 4-5 eclipses occur per year.

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