1997 is a leap year or a common year

1997 is not divisible by 4, so 1997 is a common year and not a leap year. The specific calculation method of leap year and common year is as follows:

1. Ordinary leap years: years that are divisible by 4 but not divisible by 100 are ordinary leap years. (e.g. 2004 is a leap year, 1997 is not a leap year);

2. Century leap year: A leap year that is divisible by 400 is a leap year of the century. (e.g. 2000 is a leap year of the century, and 1900 is not a leap year of the century);

Extended Information: Causes of Leap Years:

The Earth's orbital period around the Sun is 365 days, 5 hours, 48 minutes and 46 seconds (conjunction), which is a return year (tropical).

year）。The common year of the Gregorian calendar is only 365 days, which is about 365 days shorter than the return year.

day, the remaining time is about one day accumulated every four years, so that one day is added at the end of February in the fourth year, so that the length of the calendar year of that year is 366 days, and this year is a leap year.

There are 97 leap years in the current Gregorian calendar every 400 years. According to a leap year every four years, the average number of days per year is to be counted out, so that after 400 years, about 3 days will be calculated. Thus three leap years are reduced every 400 years.

It is a common year, 365 days, and the calculation of leap years boils down to what is commonly said: every four years is a leap; There is no leap in 100 years, and then in 400 years.

Common year. Leap years: divisible by 4 (e.g. 2004, 2008), but divisible by 400 if ending in whole hundred (e.g. 1900, 2100 are not leap years, 2000, 1600 are leap years).

Thus there are: leap years: 1992, 1984, 2000

Ordinary years: 1997, 1900, 2006

Flat divided by 4 without a remainder and a leap remainder by flat.

It's a leap year.

Leap years are determined by being divisible by 400. Or divisible by 4 but not by 100.

A leap year was established to compensate for the difference between the number of days of the year and the actual orbital cycle of the earth caused by the man-made calendar. The year in which the time difference is made up is a leap year. There are 366 days in a leap year (31, 29, 31, 30, 31, 31, 30, 30, 31, 31, 30, 31, 30, 30, 30 and 31 from January to December).

Any year in which there is a leap day (29 days in February) in the solar calendar; Leap more (more than the year is intercalated. The difference in time between the lunar calendar and the return year).

Note that there is no direct correlation between leap years (nouns in the Gregorian calendar) and leap months (nouns in the lunar calendar), which are only divided into leap years and peaceful years, with a common year having 365 days and a leap year having 366 days (one more day in February); There may also be leap months in a normal year (e.g. 2017 is a common year, and the lunar calendar has a leap month and a leap month in June).

Causes of leap years:

The usual explanation is that there are many days, hours, and minutes in a year, and the whole number 365 is still superfluous, and after the accumulation reaches 24 hours in a day, the year in which an extra day is added is a leap year. This explanation just tells everyone how to calculate, and it is something that is set artificially.

The most fundamental reason is that the Earth's orbit around the Sun is 365 days, 5 hours, 48 minutes and 46 seconds (conjunction), which is a tropical year.

The common year of the Gregorian calendar is only 365 days, which is about one day shorter than the return year, and the remaining time is about one day every four years, so the fourth year adds one day at the end of February, so that the length of the calendar year of that year is 366 days, and this year is a leap year.

There are 97 leap years in the current Gregorian calendar every 400 years. Based on a leap year every four years, an average of more days are counted per year.

In this way, after 400 years, it will be about 3 more days. Thus three leap years are reduced every 400 years. Therefore, the Gregorian calendar stipulates that when the year is an integer hundred, it must be a multiple of 400 to be a leap year; A century year that is not a multiple of 400, and even a multiple of 4 is not a leap year.

1996 was a leap year.

The law followed by the determination of leap years in the Gregorian calendar is: one leap in four years, no leap in one hundred years, and then leap in four hundred years.

A simple method of calculating leap years in the Gregorian calendar (a leap year is a leap year if one of the following conditions is met, and vice versa is a common year).

1.Divisible by 4 but not by 100.

2.It is divisible by 100 and is also divisible by 400.

If this number can be divided by four, it is a leap year. So 1996 was a leap year.

Hello: 1996 is divisible by 4.

So 1996 was a leap year.

It is a normal year.

The year of the year is not divisible by 400, the year with a remainder is the common year, and the year of the leap year is divisible by 400, or the year is divisible by 4 but not by 100. And 1997 divided by 4 equals 499 and 1, so it is a common year. Leap years are established to make up for the time difference between the number of days of the year and the actual orbital cycle of the earth caused by the artificial calendar.

There are 366 days in a leap year in the solar calendar, and the months from January to December are 31 days, 29 days, 31 days, 30 days, 31 days, 30 days, 31 days, 31 days, 31 days, 31 days, 30 days, 31 days, and the lunar leap year is actually 383 or 384 days because it is one month longer than a normal year.

1998 was a normal year.

The calculation method of leap year is: one leap in four years, no leap in one hundred years, and another leap in four hundred years. The year 1998 is not a multiple of a hundred years, so the condition of a hundred years without a leap is not met. So, 1998 was a normal year.

In addition, the number of days in February is the key to determining whether the cong brigade is a leap year, with only 28 days in February in normal years and 29 days in February in leap years. February 1998 had only 28 days, so it was certain that 1998 was a normal year.

All the years that are buried and cannot be divisible by 4 are ordinary years, and the years that can be divisible by 4 are leap years. A year of a hundred that is not divisible by 400 is a common year, and a leap year that is divisible by 400. 1998 is not divisible by 4, so it is a flat ruler year.

To determine whether a year is a leap year, just divide the year by 4 and divide it by 100 and 0, or divide it by 400 and 0, then this year is a leap year, otherwise it is a common year!

Summary. Dear, 1998 is a common year, not a leap year. All years that are not divisible by 4 are common years, all years that can be divisible by 4 are leap years, and all years that cannot be divisible by 400 are common years, and those that can be divisible by 400 are leap years, and 1998 is not divisible by 4, so they are common years.

The above information is ** on Huayi.com.

Dear, 1998 is a common year, not a leap year. All years that cannot be divisible by 4 are common years, all the years that can be divisible by 4 are leap years, and the years that cannot be divisible by 400 are common years, and those that can be divisible by 400 are leap years, and 1998 cannot be divisible by 4, so they are common years. The above information is ** on Huayi.com.

Summary. A.D. 1998, a common year in the Gregorian calendar, a total of 365 days, 53 weeks. The Year of the Tiger in the lunar calendar, leap May, a total of 384 days.

A.D. 1998, a common year in the Gregorian calendar, a total of 365 days, 53 weeks. The Year of the Tiger in the lunar calendar, leap May, a total of 384 days.

To determine whether a year is a leap year, you only need to look at the last two digits of the year, if the last two digits are divisible by 4, then it is a leap year, and vice versa, it is not.

When we encounter a year where the last two digits are 0, we look at the first two digits of the year; If the first two digits are divisible by 4, then it is a leap year, and vice versa.

Summary. 1998 is a common year, and the calculation method is to divide 1988 by 4, because it is not divisible, so it is a common year.

1998 is a common year, and the calculation method is to divide 1988 by 4, because it is not divisible, so it is a common year.

Ordinary years and leap years are calculated as follows: ordinary years are divisible by 4 and not divisible by 100 for leap years, century years are divisible by 400 for leap years, and all others are common years. A year in which there is no leap day in the solar calendar or no leap month in the lunar calendar is called a common year.

February in a common year has 28 days, while February in a leap year has 29 days. The solar calendar has 365 days in a normal year, and the lunar calendar has 354 or 355 days in a normal year, and the number of lead destroyed in very few socks is 353 days.