# Question: Why Do Some Months Have 31 30 29 Or 28 Days?

## Do all months have 28 days?

Answer and Explanation: All months of the year have at least 28 days, while February is the only month that is comprised of only 28 days (except for leap years, which occur….

## What occurs twice in a week once in a year and never in a month?

The answer is the letter “E”. It comes once in a year , twice in a week and never in a month.

## What is the answer to 18 on brain test?

Here’s the solution for Brain Test level 18 “How many month have 28 days” Answer: Every month has 28 days at least. The answer is 12. About Brain Test Game: “Brain Test is an addictive free tricky puzzle game with a series of tricky brain teasers.

## Why is a Week 7 Days long?

The Babylonians, who lived in modern-day Iraq, were astute observers and interpreters of the heavens, and it is largely thanks to them that our weeks are seven days long. The reason they adopted the number seven was that they observed seven celestial bodies — the sun, the moon, Mercury, Venus, Mars, Jupiter and Saturn.

## How do you calculate a 30 day notice?

A tenant must vacate the rental unit by the end of the thirtieth day after the date on which notice was served. For example, if a 30-day notice is served on July 16, you would begin counting days on July 17, and the 30-day period would end on August 15.

## Why does a month have 30 or 31 days?

If it takes the Moon 28 or 29 days to orbit the earth why are most months 30 or 31 days long? This has resulted from a compromise. Initially, months were mostly 29 days long and the average length of a month was 29.5 days which is the time taken by the Moon to orbit the Earth.

## What is a month with 31 days?

Months that have 31 days are: January, March, May, July, August, October, December.

## How can I remember the months with 30 days?

Rhyme to remember number of days in each month:30 days has September, April, June, and November. When short February’s done. All the rest have 31…Thirty days hath September, April, June, and November, all the rest have thirty-one. February has twenty-eight, but leap year coming one in four.

## What is a month with 30 days called?

1. A leap month is an extra intercalary month inserted between two regular months. Leap months do not occur in the Gregorian calendar, which is the calendar used in most English-speaking countries. –

## Why are there only 28 days in February Why do other months have 30 or 31 days?

In order to fully sync the calendar with the lunar year, the Roman king Numa Pompilius added January and February to the original 10 months. The previous calendar had had 6 months of 30 days and 4 months of 31, for a total of 304 days. … He subtracted a day from each of the 30-day months to make them 29.

## What determines the length of a month?

As a calendrical period, the month is derived from the lunation—i.e., the time elapsing between successive new moons (or other phases of the moon). A total of 12 lunations amounts to 354 days and is, roughly, a year. A period of 12 lunations was therefore used by some primitive peoples to make their calendrical year.

## Is a month 30 days or 31 days?

The months are either 28, 29, 30, or 31 days long. Calendar with 12 months. Each month has either 28, 30, or 31 days during a common year, which has 365 days. During leap years, which occur nearly every 4 years, we add an extra (intercalary) day, Leap Day, on 29 February, making leap years 366 days long.

## What is responsible for the length of a day?

The length of the day–how fast or slow the Earth rotates–depends on how Earth’s mass is distributed. Its mass includes the atmosphere, the solid Earth and its fluid core. When the distribution of Earth’s mass changes, as during a major earthquake, for example, so does the speed of its rotation.

## What months dont have 30 days?

30 days has September, April, June and November. And 29 in each leap year. A knuckle is “31 days”, and in between each knuckle it isn’t.