WTF Fun Fact 13224 – Full Moons in February

It’s possible to have no full moons in February. It doesn’t happen often, but February goes by without a full moon roughly every 19 years.

How can there be no full moons in February?

The lunar cycle starts with a new moon and ends with the next new moon.

The length of a lunar cycle is roughly 29.5 days. In a normal year, February has 28 days. This makes it shorter than the average length of a lunar cycle.

February does not have a full moon in a year when there are two full moons in January. This occurs approximately once every 19 years, as part of the Metonic cycle, which is a pattern of full and new moons repeating approximately every 19 years.

Recent years in which February did not have a full moon include 2018, 1999, 1980, 1961, and 1942.

What’s the significance of a full moon?

The gravitational pull of the moon and the sun causes the tides to rise and fall. The full moon has the strongest tidal effect because it is in direct line with the earth and the sun.

The full moon also provides brighter light at night. This can impact the behavior of nocturnal animals, such as owls and bats. It can also affect the migratory patterns of some species.

A full moon has the strongest effect on tides, and it is responsible for producing spring tides, which are the highest tides of the lunar cycle.

In some cultures, the full moon is used as a reference point for planting, harvesting, and other agricultural activities. And for many cultures and religions, the full moon has spiritual significance and is associated with rituals, ceremonies, and festivals.

In the future, February is expected not to have a full moon in 2037, 2056, 2075, and 2094.

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Source: “Why no full moon in February 2018?” — EarthSky

WTF Fun Fact 12965 – The New Moon

Have you ever heard that there was a new Moon only to look up at the sky and see no moon at all? Well, that’s because the Moon cycle is starting all over again.

Types of Moons

We obviously only have one Moon, but it goes through lots of phases. A “new” Moon is the opposite of a full Moon. During a full Moon, the sun is fully illuminating one side of the big ball. That’s what makes it glow so brightly in the night sky.

During the time when the Moon is “new,” we are seeing the side that is not illuminated by the sun. The Moon is still up there, but without the sun shining on it, we can’t see it in the night sky.

According to Farmer’s Almanac (cited below) “When the Moon is “new,” it’s located between the Earth and the Sun. In other words, the Moon is in line with the Sun, and the Sun and Earth are on opposite sides of the Moon. (Note that when the Moon is perfectly aligned in front of the Sun, it blocks out the Sun, giving us a solar eclipse.)”

Lunar cycles and the new Moon

The new Moon is the beginning of the lunar cycle. This lasts 29.5 days, and it’s the amount of time it takes for the moon to orbit the Earth.

The Moon cycle used to be used to measure months (each new moon signaled a new month).

Another fun fact: the new Moon always rises close to the time of sunrise.

And according to The Farmer’s Almanac:

“As the new Moon crosses the sky during the day, rising and setting around the same time as the Sun, it’s lost in the solar glare…The new Moon is also lit up from behind, showing us its dark side. It’s doubly invisible. New Moons generally can’t be seen with the naked eye.”

About a day (maybe two) after a new lunar cycle begins, you’ll be able to look up at the night sky and see a slim crescent off to the West after the sun sets. These crescent moons are often very bright.  WTF fun facts

Source: “Learn All About the New Moon” — Almanac