Is 2023 a leap year? Is there a leap month?
2023 is not a leap year, this year’s Gregorian calendar February has only 28 days, There are 365 days in a year, so it is a normal year.From the perspective of the lunar calendar, there is a leap month in this year, which is the leap second month.In addition to this, there will be two beginning springs in this year, so it is also a double spring year.
What does leap year mean
Leap year is a noun in the calendar, divided into ordinary leap year and century leap year.Leap years are established to make up for the time difference between the number of days in a year and the actual revolution period of the earth caused by human calendar regulations.The year in which the time difference is added is a leap year.A leap year has a total of 366 days (January to December are 31 days, 29 days, 31 days, 30 days, 31 days, 30 days, 31 days, 31 days, 30 days, 31 days, 30 days, 31 days).Where there is a leap day (February 29th) in the solar calendar, there is a leap year (the remainder of the year is set as a leap year.The difference between the lunar calendar and the tropical year is the difference between each year).
What year is 2023?
The year 2023 is the Gregorian calendar year, with a total of 365 days and 52 weeks.January 1st to January 21st is the year of Renyin (the year of the tiger); the tenth day of the twelfth lunar month to the nineteenth of November of the year of Guimao) is from January 22nd to December 31st of the year of Guimao (the year of the rabbit).February (minor), a total of 384 days.Because of the leap month in this year, there are two beginning springs in one year of the lunar calendar.It is called the Double Spring Year.Note that leap years (nouns in the Gregorian calendar) and leap months (nouns in the lunar calendar) are not directly related.The Gregorian calendar is only divided into leap years and ordinary years, with 365 days in ordinary years and 366 days in leap years (one extra day in February); There are leap months (for example, 2017 is a normal year, and the lunar calendar has leap months and leap June).
Calculation method of leap year year
Calculation of leap year in Gregorian calendar
(365 days, 5 hours, 48 minutes, 45.5 seconds in a tropical year)
1 , Partial hundred years:Leap years that are divisible by 4.(For example, 2004 is a leap year, and 2001 is not a leap year)
2.Hundred years:those that are divisible by 400 are leap years.(For example, 2000 is a leap year, 1900 is not a leap year)
3.For a year with a large value:if this year is divisible by 3200, then this year is not a leap year, but if this year is divisible by 3200, it is not a leap year.Divisible by 172800, it is a leap year.For example, 172800 is a leap year, and 86400 is not a leap year (because although it is divisible by 3200, it is not divisible by 172800).(This is calculated on the basis of 365 days 5h48’45.5’’ in a tropical year)
Calculated on the basis of 365 days 5h48’45.5’’ in a tropical year:16000 hours, 153600 minutes, 145600 seconds = 18600 hours and 26 minutes in 3200 years 40 seconds, there are 97 leap years every 400 years in the current Gregorian calendar, 97*8=776 leap years in 3200 years = 776*24 hours = 18624 hours> 18600 hours, so only 775 leap years can be counted, 3200 are not leap years, so 775*24=18600, 26 minutes and 40 seconds more (total 1600 seconds), what should I do? How many cycles of 3200 years need to be experienced, enough to make up for 1 day (86400 seconds), the answer is exactly 54 cycles (86400=1600*54), which lasted 172800 (=3200*54) years.
BC leap year calculation
According to the leap year algorithm, AD 4 is a leap year, and the cycle is 4 years.If AD has 0 years, it is a leap year.Since there is no year 0 in AD, then 1 BC is a leap year.
1.Partial year:Divide the number of years by 4, and a year with a remainder of 1 is a leap year.(For example, 1 year BC, the first 5 years, and the first 9 years are leap years)
2.Hundred years:Divide the number of years by 400, and a year with a remainder of 1 is a leap year.(For example, 401 BC and 801 years ago are leap years)
3.For years with large numbers:the number of years is divided by 3200, and the remainder is 1, then this year is not a leap year; the number of years is divided by 172800, A remainder of 1 is a leap year.(For example, 172801 BC is a leap year, but 864001 is not a leap year)
微信扫码关注
更新实时通知