What happens when Earth has 2 full moons in one calendar month?

Answer 1

Nothing extraordinary happens. Though not very frequently, there will be two full moons in one month due the the moon's cycle and our calender system. By the way, the second full moon of that month is called a "blue moon" (that's where the phrase "once in a blue moon" comes from). It is interesting that there are other ways to define Blue Moon. See link for more information.

Answer 2

When Earth has two full moons in one calendar month, it is referred to as a "Blue Moon." This occurrence is rare and happens about once every 2.7 years. It does not have any significant scientific impact on Earth or its inhabitants.

Answer 3

It is called a blue moon. It comes from having more days ( about 11) in the year than the 12 lunar cycles.
Every few years there are enough days to accumulated to have an extra full moon.
Since this is an uncommon event, we have the expression "once in a blue moon."

Answer 4

Nothing really happens. The second full moon in a month is sometimes called a "blue moon". The moon orbits the earth approximately every 28 days and since some months have more than 28 days it is possible and happens from time to time.

Answer 5

there isn't always 2 full moons in one month but this can happen when it does its called a blue moon.But a blue moon is also a figure of speech.For Example(I do homework once in a blue moon.

A blue moon can happen because a full cycle of moon phases repeats in 29.53 days,

and 11 of the 12 months are longer than that. That means that whatever phase the

moon is in when the month begins, that phase will repeat before the month ends. If

it happens to be a Full one, then there'll be another Full one before the month ends.

Answer 6

You seldom do.

The interval between full moons is 29.53 days. So February can never have two full

moons, because the whole month never has 29-1/2 days in it, even in a leap year.

Concerning the other months:

In order for April, June, Sept, or November to have two full moons, the first one

must be in the first 12 hours of the 1st of the month, so the second one can fit in

during the last 12 hours of the 30th.

In order for January, March, May, July, August, October, or December to have two

full moons, the first one must be either on the 1st of the month, or else in the first

12 hours of the 2nd, so that the second one can fit in between the middle of the 30th

and the end of the 31st.

Here's another way to look at it:

One whole year is 365.23 days long. The space between two full moons is 29.53 days.

So there's time for (365.23/29.53) = 12.37 periods between full moons, or an absolute

max of 13.37 full moons in one year. With only 12 months in the year, you can't squeeze

two full moons into very many of them.

And that's why it doesn't happen too often.

Answer 7

If there is two full-moons, the first full-moon is called a full-moon and the second one is called a blue moon.

Answer 8

Absolutely. You're entitled to have as many of them as you want, at intervals of 29.53 days.

Answer 9

It would make the tides go crazy.

And the axis might shift.

The gravitational pull on Earth might change.

It would really throw us off balance.

Answer 10

Nothing special; that happens every other year, on average. Some people call this a "blue Moon".

A point of trivia; February is the only month that can't have a "blue" Moon.