# How often does a new moon occur?

In most years, there are 12 New Moons, one for each month. However, our calendar is not exactly in sync with astronomical occurrences. As a result, a year gets 13 New Moons every now and then. When this occurs, at least one of the new moons will be a black moon. So, how many black moons have there been over the last 1000 years? The number of black moons in a given year depends on how many times solar eclipses occur within that time frame.

During a total lunar eclipse, the Moon is completely covered by Earth's shadow. Because all direct sunlight is blocked from directly reaching the Moon, only light from the Sun as refracted through Earth's atmosphere reaches it. This has two important results: first, because all its direct light is obscured, the Moon will appear dimmer from Earth than otherwise; second, a certain part of Earth's surface - that facing towards the Moon - must at least partly be sunlit during an eclipse.

Lunar eclipses are visible on half of Earth. Where it is night, the eclipse will be visible as a red-colored Moon. Where it is the day, the eclipse won't be visible. During a total lunar eclipse, the Earth's atmosphere refracts light from the Sun that reaches and enters its shadow to create a reddish hue on Earth's moon. The color varies depending on how much dust or clouds are present in Earth's atmosphere at the time of the eclipse.

## How often does a "dark moon" occur?

Once every 29.5 days How frequently do they occur? As the AstroTwins point out, the lunar cycle is 29.5 days long, therefore the black moon happens once every 29.5 days. They aren't exceptionally unusual, or any more so than any other moon phase.

A dark moon occurs when the Earth gets in the way of the Sun and blocks it from view from our planet. Because no part of Earth is directly facing away from the sun, every part experiences a total eclipse. On average, a dark moon will happen around midnight somewhere on Earth. But because of differences in altitude and other factors, different places experience their dark moons at different times. For example, a person standing on the surface of the moon would see it go completely black at one spot and then back again as the Earth moved between the moon and the Sun.

People have been observing eclipses for thousands of years without any knowledge of why they occurred. Scientists only started looking into it more recently. They think that maybe people used to believe that eclipses were signs that the Earth was ending or beginning something important, but now we know that they are just natural events.

Eclipses can be very dangerous if you're not aware of them happening. During a total solar eclipse, the Sun's light is blocked out by the Moon and invisible sunlight falls on the Earth.

## What moon comes every 19 years?

The blue moon On January 31, there came the first blue moon. Because February only has 28 days, a whole lunar cycle could not fit into the month, thus there was no full moon that month. The following full moon occurred on March 1, and the second blue moon occurred on March 31. This type of occurrence occurs around once every 19 years.

The name "blue moon" is derived from the color of the moon when it is next to a dark sky environment without any clouds present. Because of this, most people will never see a blue moon. However, due to certain astronomical events, such as eclipses, solar storms, or asteroid impacts, they can occur in visible light spectra.

In addition to being black-and-white, the term "blue moon" also refers to the number of times it has happened. Your chance of getting a third consecutive blue moon falls below 5% each time it happens. So, if you were to start counting at the first blue moon that you ever saw, about 2 out of 3 people would stop counting before reaching it. But because this happens so rarely, many people take great pride in seeing this rare event come true!

Astronomers use different definitions for what constitutes a blue moon. Some define it as the third moon in a row, others say it's when the moon is gray instead of white, and still others say just your first two moons in a row are blue.

## How often do a blue moon and a harvest moon occur?

This happens every two and a half years on average. Since the 1940s, the second full moon in a calendar month has also been referred to as a "blue moon." In September 2016, a 'Harvest Moon' rises above the foothills of the San Gabriel Mountains as viewed from Pasadena, California. The moon was at its fullest size and color between gold and orange.

The term "harvest moon" comes from the moon appearing at its brightest and closest to the earth during the harvest season. The moon begins to get closer to the earth after it reaches its maximum distance from us (perigee). It then starts to move away again (apogĂ©e), until it reaches another maximum distance from us. This cycle will repeat itself once more before the moon returns to where it started from today - half way between the earth and the sun.

All around the world, people watch for the harvest moon. When they see it, they know that there will be food to eat when we go to harvest our crops. Farmers like having the full moon to help them plan their work. They don't want to leave any part of their field unplowed because then it would be difficult or even impossible to grow crops there next year.

Some people say that if you look up at the night sky on October 31st, you should be able to see the shadow of someone walking out into the moon.

##### Martha Flock

Martha Flock has always been fascinated with how people are connected to each other through time, space, energy, love or light. After her own personal experiences in life-altering moments led her on a quest to discover more about herself and others in this realm of being human she decided to become an astrologer so that she could help others understand their own journey better.