# How many phases are there in a month?

Each month/moon was split into four phases: new, first quarter, full quarter, and final quarter. We now refer to these segments as "weeks." However, anybody is free to create as many subdivisions as they choose. There are no Lunar Phase Police who will argue otherwise.

The idea of weeks vs. months is an ancient one that comes from the lunar cycle. On Earth, the moon's orbit around our planet varies between 27 days and 59 days. Because of this variation, some months have 29 or 30 days while others have 31 or 28. When counting months it's important to remember that the number of days in a month is not always the same.

For example, if you divide the number of days in April (30) by four, you get seven days per week. However, if you divide the number of days in May (31) by four, you only get two weeks per month. May has more days than April but because they fall within the same lunar phase it doesn't matter. As long as you're aware of which day of the month it is you can calculate the number of days until the next new moon.

In science class we learned that the average length of a human pregnancy is about 39 weeks, or approximately 379 days. This is because humans have 12 weekly weeks plus roughly five days off for vacation, sick time, etc.

## How many days are there in a month?

A lunar cycle is the 29.53 days it takes the Moon to orbit the Earth. One lunar cycle, rounded up to 30 days, is one such lunar cycle. Every 365.256 days, or one year, the Earth rotates around the Sun. A year has 12 lunar cycles, or 12 x 30 = 360 days. At the end of each lunar cycle, the moon moves through all 12 constellations of the zodiac.

The Moon is dimly visible with the naked eye on a clear night when it is not overcast. It can be seen at its brightest about three weeks after it rises above the horizon, but it can be seen all night if need be. The Moon appears red because of sunlight that reaches it from the planet Mars. Science says this happens because the molecules in our atmosphere that normally vibrate in the dark absorb certain wavelengths of light. When they later release this energy as heat, they glow with the color red-brownish-orange.

The word "lunar" comes from Latin luna, meaning "moon". Lunar months are based on the phases of the Moon: gibbous (Latin for "bulging belly") - when the Moon is closest to Earth; crescent (Latin for "half full") - when it is half covered by the shadow of Earth; last quarter (Latin for "empty quaarter") - when it is completely hidden from view.

## What are the months that have thirty-one days?

January, March, May, July, August, October, and December all have 31 days. February has 28 due to a Sunday being counted as day 1 of the month.

Years that add up to 31 are called "leap" years. Leap years occur every four years, but not every year is a leap year. A year is a leap year if it contains an odd number of days, unless it's divisible by 4 but not by 100. For example, 1999 was not a leap year because it was evenly divided between a prime number and its reciprocal; however, 1600 was a leap year since it was evenly divided between 0 and 1 (the latter when it was first introduced). Prior to the adoption of the Gregorian calendar in Europe, many countries used their own local variants of the calendar, which included some years that were leap years according to the European standard but not according to the ISO standard. These include: 1752, 1816, 1840, 1888, 1920, 1956, 1984, 2000, and 2016.

It is possible to calculate how many days are in each month using this formula: 30 × year + day (1-Sunday).

## How many months are in June?

The number of days in the month is shown in the days column. Except for February, which has 28 days, other months have 30 or 31 days (29 in a leap year). Every fourth year, February gets 29 days rather than 28.. Months of the Year

 6 June Jun. 30 summer

## Which two months in a year have 31 days in succession?

The months of January, March, May, July, August, October, and December all have 31 days. So, in this case, July and August are consecutive months with 31 days each.

Another way to look at it is that there are 12 monthly periods of 31 days each, so one month will always be followed by another month that has the same number of days. This fact comes in handy when you need to know the number of days in a year or any other multiple-of-31 period.

For example, if you want to find out how many years it has been since your birthday, you can simply divide the number of days in the year by 31 and you'll get the answer you're looking for. 365/31 = 11.6.. Which means it has been about 11 months and 6 days since your birthday last year!

Here are some more examples:

Number of days in a year: 365/31=11.87.. which means it has been almost 12 months since my birthday last year!

Number of months in a year: 12/31=3.1.. which means it has been about 3 months since my birthday last year!

Number of weeks in a year: 52/31=1.

##### David Mattson

David Mattson is a building contractor and knows all about construction. He has been in the industry for many years and knows what it takes to get a project built. Dave loves his job because each day brings something different: from supervising large construction projects to troubleshooting equipment problems in the field.

#### Disclaimer

BindleyHardwareCo.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.