How is the year, month and day prescribed, and the knowledge about the year, month and day

Year, Month and Day Knowledge Points:

There are 12 months in a year.

There are seven major moons: January, March, May, July, August, October, December, and the two adjacent major months of the year are July and August.

There are 4 small months: April, June, September, and November.

Special February: 28 days in a normal year, 29 days in a leap year.

There are usually 3 common years and 1 leap year every 4 years. The number of Gregorian years divided by 4 and without a remainder is generally a leap year. Gregorian calendar years are whole hundreds, and must be multiples of 400 to be leap years.

There are 365 days in a common year, 366 days in a leap year, 181 days in the first half of a normal year, 182 days in the first half of the leap year, and 184 days in the second half of the year.

There are 90 days in the first quarter of a normal year (January-March), 91 days in the first quarter of a leap year, 91 days in the second quarter (April-June), 92 days in the third quarter (July-September) and 92 days in the fourth quarter (October-December).

The People's Republic of China was founded on October 1, 1949, and October 1, 2049 marks the centenary of the founding of the People's Republic of China.

January 1 is New Year's Day, March 3 Love Ear Day, March 5 Learning from Lei Feng, March 8 Women's Day, March 12 Arbor Day, April 4 (or 5) Qingming Day, May 1 Labor Day, June 1 Children's Day, June 6 Love Your Eyes Day, July 1 Birthday of the Communist Party of China, August 1 Army Day, September 10 Teacher's Day, September 20 Love Teeth Day, October 1 National Day, December 3 International Day of Persons with Disabilities, December 25 Christmas.

My birthday is () month () day, in () quarter; Daddy's birthday is () month () day, in () quarter; Mom's birthday is () month () day, in () quarter.

Mathematics year, month and day formula: formula 1: one leap in four years, no leap in one hundred years, four hundred years and leap formula 2: one, three, five, seven, eight, ten, twelve, thirty-one days will never be bad;

4th, 6th, 9th, 11th, 30th;

Seven big months in the heart, seven before the single month and eight after the double;

February 28 in ordinary years, February 29 in leap years.

Do you know about these festivals?

New Year's Day: January 1; Arbor Day: March 12; Women's Day:

April 8, Labor Day: May 1; Children's Day: June 1; Party's birthday:

Army Day on July 1: August 1; Teacher's Day: September 10; National Day:

Hong Kong's return to China on October 1: July 1, 1997; Macau's return to the motherland: December 20, 1999 Beijing Olympic Games:

8 August 2008.

135780 31 days are never bad, 469 winter 30 days, February 28 in ordinary years, February 29 in leap years, one leap in four years, no leap in a hundred years, and another leap in 400 years.

Every four years, a leap year, divisible by four is a leap year, and a common year is divisible by four or 400.

135780 wax 31 days is not worse than 4691, not enough 31.

The singular number before July is a leap year, and the even number after July is a leap year. February is a special month.

135780 wax, 31 days will never be bad. Four-six.

This is the big moon. And Satsuki. There is also a flat moon.

There are three hundred and sixty-five days in a year.

A year is the time it takes for the earth to revolve around the sun.

One month, that is, the moon orbits the earth, that is, a synodic month.

One day is the time it takes for the earth itself to rotate in one cycle, that is, one day and one night, a total of 24 hours. (Actually, there are about 23 minutes and 56 seconds in a day).

(1) There are 12 months of copying in a year.

There are 31 days in the month bai

It is a big month, and there are 7 big months every year, and it is January

Duzhi March, May, July, August, October, December.

There are 30-day months that are small months, and there are 4 small months of DAO every year, which are April, June, September, and November.

2) February is neither a big month nor a small month.

3) July and August, December and January are all consecutive big months.

In the same year, then only July and August are consecutive big months.

4) There are 7 days in a week, with a minimum of 4 Sundays and a maximum of 5 Sundays in a month.

5) The date is the same for every 7 days plus the day of the week.

For example, if June 1 is a Wednesday, then June 8 is still a Wednesday.

6) A year with only 28 days in February is a normal year, and there are 365 days in a normal year.

February A year with 29 days is a leap year, and a leap year has 366 days throughout the year.

There are usually 3 common years and 1 leap year every 4 years. The number of Gregorian years divided by 4 and without a remainder is generally a leap year. The number of Gregorian years is a whole hundred, and it must be divided by 400 without a remainder to be a leap year.

7) The method of judging common years and leap years, if the single digit is an odd number, it is a common year, and if the single digit is an even number, divide the last two digits of the Gregorian year by 4, and the remainder is a common year, and there is no remainder for leap years. The last two digits are 0 and are removed with the first two digits to 4.

There are 12 months in a year. There are 31 days.

The copy month is the big month, there are seven big months in the year, which are January, March, May, July, August, October, December, the month with 30 days is the small month, and there are four small months in the year, which are April, June, September, October, February, which are neither big months nor small months, July and August, December are all consecutive big months.

Success hahahaha brother brother brother good.

Year, month and day is a unit of time, and people form the phenomenon of day and night alternation according to the rotation of the earth"day"the concept of ; According to the moon's revolution around the earth, synodism is generated, formed"month"The concept is based on the phenomenon of the alternation of seasons produced by the Earth's revolution around the Sun"years"the concept of ;

Chinese name: year, month and day.

Type: Chronometric unit.

Background: Earth's rotation and revolution.

One revolution: Mean solar day.

Conversion: 1 year = 12 months = 365 366 days.

In 46 B.C., when the Roman Emperor Caesar revised the calendar, he stipulated that the year was 12 months, and the first, third, fifth, seventh, ninth and eleventh months were designated as the great months, with 31 days per month; The other months are set as small months, with 30 days per month. However, according to this rule, a year is 366 days, so it is necessary to find a month to deduct one day. At that time, the prisoners sentenced to death were executed in February, so people hoped that February would pass quickly.

So, I deducted February by one day. In this way, there are 29 days left in February.

Later, there was a man named August who became Roman emperor. He found that Caesar was born in July and July in the great month, while he himself was born in August and August in the small month. In order to show that he had the same dignity as the previous emperor, he made the month of August the Great Month, which was changed to 31 days.

But what if there's one more day? So another day was subtracted from February, and there were 28 days left in February.

Year: There are 12 months in a year, and those that are divisible by 4 are leap years. If there are two or more zeros in the year, divide by 400.

Month: 12 months is a year. There is a big month and a small month, and there is a special month, which is February.

February has 28 days in a common year and 29 days in a leap year. The big moons are January, March, May, July, August, October and December (December is also called the wax moon). The months of April, June, September, and November (November is also called the winter moon).

The year does not include the day of the month. A year is a year, for example, this year's wheat harvest is good, 10% more than a normal year.

The second meaning of vintage is a long time, for example, these wines are a little old.

Month refers to a certain month, for example, there has been no rain in April this year, which refers to the month of April this year. What month is this? It is to ask which month.

So year and month are different concepts.

Date. Dates include year, month, and day.

On some occasions, the number of months and days can be read together to indicate the date, such as "516" for May 16, "77" for 77, and 30 for "卅".

If the number of months and days are the same, you can use "heavy" or "double", such as "heavy nine" is September 9, and "double ten" is October 10.

The knowledge about the year, month and day is:

In a day, the hour hand on the clock travels exactly twice, for a total of 24 hours. Therefore, the timekeeping method from 0:00 to 24:00 is often used, which is usually called the 24 hour timekeeping method.

2. The commonly used time units are: year, month, day, hour, minute, and second.

3. There are 12 months in each year, of which there are 7 big months, and each big month has 31 days, respectively.

January, March, May, July, August, October, December; There are 4 small months, and each small month has 30 days.

April, June, September, November. February is neither a big month nor a small month.

There are two ways we can memorize the big and small moons: one is the fist memory method. (Using the unevenness of the fist joint, practice while pointing at the fist). The second is to memorize the songs of the big and small months, and the 31 days of wax are never bad for the thirty days of winter, and the twenty-eighth day of February in ordinary years.

4. The earth we live in always revolves around the sun, and it takes 365 days, 5 hours, 48 minutes and 46 seconds for the earth to revolve around the sun. Every four years there is a difference of nearly one day, and if you add this day to February, there are 366 in the year, which is called a leap year. The Gregorian calendar year is a quadratic of 4, which is generally a leap year; However, if the Gregorian calendar year is a whole hundred, it must be a multiple of 400 to be a leap year.

There is a leap year every four years, and the time difference is not a full 24 hours, but 23 hours, 15 minutes and 4 seconds, so a leap year in 4 years is calculated by an extra 44 minutes and 56 seconds, which seems to have a small error, and if the time is long, the error will be large. Every 400 years, it is necessary to calculate 3 days 2:53:20 seconds more, so every 400 years should be added 3 days less. Therefore, scientists have made a supplementary provision:

A year is a full hundred years, and it must be a multiple of 400 to be a leap year. ”

5. The year is divided into four quarters: month - 90 days in the first quarter (common year) and 91 days (leap year month - 91 days in the second quarter - 92 days in the third quarter - 92 days in the fourth quarter.

The knowledge about the year, month and day is that there are 12 months in a year and 31 days in a big monthSatsukiThere are 30 days, sometimes 28 days, sometimes 29 days. There are 24 hours in a day. Year, month, and day is a unit of time, and people rotate according to the earth.

The phenomenon of producing the alternation of day and night formed the concept of day. It revolves around the Earth according to the Moon.

Produces the concept of synodic formation months. The concept of the year was formed based on the alternation of the four seasons produced by the Earth's revolution around the Sun. The calendar is to calculate the length of the year, month and day and the relationship between them, and the law of burying coarse eggplant to determine the chronological order is called the calendar.

The complexity of the calendar problem

The complexity of the calendar lies in the fact that the two cycles of the return year and the synodic month are so fragmented that their relationship to the day is not as simple as the relationship between the kilometer and the meter. Moreover, they cannot communicate with each other. Therefore, the calendar always takes care of one and the other, and cannot coordinate two cycles at the same time.

For these two reasons, the calendar is generally divided into three categories. Lunar calendar, solar calendar.

and lunisolar calendars. Focusing on the coordination of the relationship between synodic and lunar calendars is called the solar calendar, referred to as the solar calendar. Taking into account the moon and the return year, the calendar month and the calendar year are called the lunisolar calendar.

Year, Month and Day Knowledge point 1, there are 12 months in a year; There are 4 quarters in a year.

Month – 90 days in the first quarter (common year) 91 days (leap year) Month - 91 days in the second quarter.

Month – Q3 92 days.

Month – Q4 92 days.

Knowledge point 2: Remember the size of the month.

Method: one, three, five, seven, eight, ten, wax, 31 days are never bad;

Fourth, sixth, ninth, eleventh, 30 days, only February has changed.

Knowing the difference Kai has a great knowledge point 3,

Ordinary year: February (28) days, annual (365) days; There were (181) days in the first half of the year.

Leap years: 29 days in February, 366 days in the whole year, and (182) days in the first half of the year.

The second half of the year is (184) days.

February is neither a big month nor a small month. There are 12 months in a year, 7 big months and 4 small months.

Knowledge point 4: The Gregorian calendar year is a multiple of 4, which is generally a leap year; But the Gregorian calendar year is a whole hundred, and it must be a multiple of 400 to be a leap year. Such as is not a leap year, but equal is a leap year.

The general Gregorian calendar year 4 has no remainder.

It is a leap year; The Gregorian calendar year is 400 of a whole hundred, and if there is no remainder, it is a leap year.

Example 1: Fill in the void vertically.

1. There are ( ) days in a year in a normal year, ( ) days in a leap year, ( ) Sun staring days in February in a normal year, and ( ) days in February in a leap year.

2. There is usually a leap year every ( ) year.

3. There are ( ) quarters in a year, and the second quarter is ( ) month, ( month and ( ) month.

Example 2: "Hit the right" and "Hit the wrong".

1. April is a small month, with 30 days. （

The year is a leap year. （

3. There are 91 days in January, February and March. （

4. The one that is a multiple of 4 is a leap year. （

Knowledge point 5, year, month, day, hour, minute, and second are all units of time.

Knowledge points: Timing method.

1. In a day, the hour hand on the clock goes exactly twice, for a total of 24 hours. Therefore, the timekeeping method from 0:00 to 24:00 is often used, which is usually called the 24:00 timekeeping method.