# How often does a full moon appear in a year?

In most years, there are 12 full moons, one for each month. Our calendar, however, is not precisely aligned with astronomical occurrences. As a result, a year gets 13 full moons every now and again. When this occurs, at least one of the full moons is referred to be a "Blue Moon."

The first thing you should know about blue moons is that they do not happen very often. In fact, only five years have had two blue moons in a single decade: 1973, 1974, 1975, 1976, and now 2007. The next time this happens will be in 2013.

There are several theories as to why our months have 14 days while the moon has 13. Some people believe that adding another day to each month will allow them to use all the time available. This theory is called "monthism" and was popular among philosophers and scientists during the Roman Empire. Others think that each month should have 31 days so that we don't run out of time ever again. This idea came from the Babylonians who invented modern mathematics around 500 B.C. Still others believe that adding another day will make people feel special and give the illusion of more time. This theory comes from religion and dates back many centuries before either group existed as we know them today.

Each month has its own unique characteristic based on which phase of the moon is visible at midnight. If the moon is dark, then it can only be seen in its entirety once a month.

## How many full moon phases are there in a year?

There are 12 full moon names, one for each month's full moon, however there are sometimes more than 12 full moons in a year. The extra full moons are called lunar gibbous moons.

Lunar gibbous means "like a loaf of bread", so these full moons look like they're almost completely round, like a loaf of bread that has been sliced nearly in half with only the crust left. The remaining half is dense and solid like a rock.

The first full moon of a season is called the moon's "waxing crescent" or "growing moon". This is because it is always seen just as the sun rises over the horizon, even though it isn't yet noon anywhere on Earth. Because it is still dark outside, we can see its edge is actually tipped by the rising sun.

The last full moon of a season is called the moon's "Waning Crescent". This is because it is always seen just before sunset, even though it isn't yet midnight anywhere on Earth. Because it is still light out, we can see its edge is actually tipped by the setting sun.

These are the only two ways I'm aware of to describe how a lunar eclipse appears from an observer location.

## What moon comes every 19 years?

Saturday's full moon, the second of the month, is dubbed the "Blue Moon." Full moons on Halloween occur once every 235 lunar months, or once every 19 years.

The next time that we will have a Blue Moon is in January 2021.

A blue moon occurs when there are two full moons within a month. However, this does not happen very often. The next time that this will happen is in January 2021.

January 31st at 3:52am EST - A blue moon occurs at 12:19pm EST on February 2nd.

There are also blue moons that happen when there is a new moon (without any stars) during a lunar eclipse. These occur at different times throughout the year, but they can only happen at full moon and new moon.

Here are some other things to know about blue moons:

Blue moons usually happen around Easter or May, but they can happen at any time of the year. If there was a blue moon last week, you would have seen it because it was cloudy here so I couldn't see it.

Sometimes people will talk about how many silver moons there have been this year. How do they count those? They don't!

## How often do we get a blue moon?

How frequently does a "blue moon" occur? Blue moons occur only every two or three years on average. The last time there were three consecutive blue moons was in 1994, 1996, and 1998.

A blue moon occurs when a full moon is also a blue color. Because of atmospheric effects, the sky over most of North America will look blue during a full moon. A blue moon can be seen in all but the most polluted areas. However, due to more intense pollution in large cities, a blue moon can appear black rather than blue in some regions.

Only about one in every 150 years will both Earth and Moon be aligned such that they are both in full moon and blue skies. Such an event happens around midnight on the 8th day of the 3rd month of a lunar cycle (when the moon is closest to Earth). It's called a tetrad and it occurs about once every 14 months. All we need to do to see it is open a window and look up!

The color blue represents calmness and relaxation. When you see a blue moon, you are seeing a moment where Earth and Moon are lining up perfectly with each other and our planet has become still.

#### About Article Author

##### Louise Denny

Louise Denny is a kind and gentle woman who loves helping her clients get in touch with their inner selves. She provides them not only with astrology, dreams, and horoscope readings but also access to other resources that they may need during their journey such as tarot cards or pendulums. Louise has been doing this for over 10 years and she is happy to share what she knows about the universe!

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