What is the maximum number of lunar eclipses that can occur during one year?

A lunar eclipse occurs when the Moon passes directly behind Earth and into its shadow. This can occur only when the Sun, Earth, and Moon are exactly or very closely aligned (in syzygy), with Earth between the other two. A lunar eclipse can occur only on the night of a full moon. The type and length of a lunar eclipse depend on the Moon's proximity to either node of its orbit.

At least two lunar eclipses and as many as five occur every year, although total lunar eclipses are significantly less common. If the date and time of an eclipse is known, the occurrences of upcoming eclipses are predictable using an eclipse cycle, like the saros.

More Info: en.wikipedia.org

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9 Comments

John Moore

According to NASA, two to four solar eclipses occur each year, while lunar eclipses are less frequent. "In any one calendar year, the maximum number of eclipses is four solar and three lunar," the agency said.6 Dec 2019 Please change the options to actually include a correct one!!!!!

David Colloby

As 3 was not indicated - went for the next upward number.

Denise Currie

Bridy4u , Please see the information I have posted above, Five is the correct answer

Denise Currie

For those arguing for three: On average there are 2 lunar eclipses per year. The maximum number of lunar eclipses in 5, though this happens quite rarely. The last time 5 lunar eclipses occurred in one calendar year was in 1879 the next time one will happen is in 2132. This information is from starwalk.space/en/news/whatisalunareclipse. I can't believe I am supporting a Brian question, but it is a good one for a change.