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It can start at any part of the lunar cycle; but when used in a calendar, it is common to start it at a new moon.

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What is it called when you have 2 full moons in 1 month?

It is called a "Blue Moon." This phenomenon occurs when there are two full moons within the same calendar month.


How many full moons do you need in a month to make a blue moon?

A blue moon is the term used when there are two full moons within the same calendar month. This occurs about every 2.7 years on average.


Is a blue moon is second full moon in a calendar month?

Yes.


Is a blue moon colored blue?

No, it has nothing to do with color. A blue moon is the name for a second full moon in a calendar month.


Was there a blue moon in 1985?

Yes, there was a blue moon in 1985. A blue moon refers to the occurrence of an additional full moon within a calendar month. In 1985, there were blue moons in both January and July.


Sometimes there are two full moons in a month what is the second one called?

The common name for the second full moon in a calendar month is a "blue moon". Pop quiz; what month can NEVER have a blue moon? Answer: February.


What is the older definition of a blue moon?

It appears as a full moon twice in one calendar month...rare


What is the lunar event blue moon?

The "blue moon" is the second full moon in the same calendar month.The complete cycle of moon phases is 29 days and a fraction; so you see that if there's a full moonon the 1st or 2nd of the month, then there can be another one before the end of the month.This December (2009) will have full moons on the 2nd and 31st ... the first blue moon in over 1-1/2 years.


Does the blue moon refer to a blue colored moon?

No, a "blue moon" is the second full moon in a single calendar month. On occasion the moon will rise with a slightly blueish or even lavender cast to it, but they are even rarer than the traditional "blue moon." On an additional note, the second new moon in a single calendar month is called a "black moon" and is similarly rare.


Does low tide last longer during a blue moon?

No. A Blue Moon is merely a full mood happening for the second time in a calendar month.


How often does a blue moon occur in the night sky?

Oh, what a beautiful question. A blue moon happens when there are two full moons within the same calendar month. Typically, this occurs around once every two to three years. It's a rare and lovely sight to behold.


How often does a blue moon occur?

Ah, what a delightful question! A blue moon happens about once every two to three years, when we enjoy the sight of two full moons in the same calendar month. Although they aren't really blue in color, these rare occurrences are a special treat for skywatchers and a beautiful reminder of the magic all around us in the great big world.