Test: Calendar - Class 8 MCQ

A leap year has 366 days, which includes an extra day, February 29th. Regular years have 365 days, but every four years, a leap year occurs to keep the calendar year synchronized with the astronomical year.

The concept of Leap Year was introduced by Julius Caesar in 45 BC, with the help of the Alexandrian astronomer Sosigenes. They realized that the solar year was approximately 365.25 days. To account for this extra quarter of a day, an additional day was added every four years to the Julian calendar.

Julius Caesar is credited with adding one day to July, making it a 31-day month. This was done to honor himself as his birthday fell in July and he wanted it to have as many days as August, which was named after the Roman Emperor Augustus.

Among the given years, 2400 is a leap year. Leap years occur every four years, except for century years (years ending in "00") unless they are divisible by 400. In this case, 2400 is divisible by 400, so it is a leap year.

Leap months are not a common occurrence in the calendar system. The concept of a leap month is found in some lunar calendars, where an extra month is added to align the lunar calendar with the solar year. However, in the context of the Gregorian calendar, which most of the world uses, there is no leap month. Leap years, with an extra day added to February, occur every four years to synchronize the calendar with the astronomical year.

The odds of being born on a leap day (February 29th) are approximately one in 1461. This is because a leap year occurs every four years, and the probability of being born on any particular day is 1 in 365. So, the probability of being born on February 29th is 1/365, and since leap years occur every four years, the probability of being born on February 29th is 1/365 * 1/4 = 1/1460. However, considering that some leap years are skipped (century years not divisible by 400), the odds are slightly higher, making it approximately one in 1461.

Morarji Desai, the 6th Prime Minister of India, was born on February 29th. He served as Prime Minister from 1977 to 1979.

Augustus, the first Roman Emperor, took one day from February and added it to August to make it a 31-day month. The month of August was named after him, and he wanted it to have the same number of days as July, which was named after Julius Caesar.

The leap year in the list is 1896. A leap year is any year that is perfectly divisible by 4, except for years that are both divisible by 100 and not divisible by 400. The year 1900, although divisible by 4, is not a leap year because it's also divisible by 100 but not by 400. So the correct answer is 1896.

The next leap year after the current year (2023) is 2024. Leap years occur every four years, so 2024 will be a leap year with an extra day added to the month of February (February 29th).