Leap Year 2020
Once every 4 years the world experiences a Leap Year. This year we celebrated this momentous event with some engaging history. From weddings to witches learn some of the strange connections that leap year hasin thesesubjects.
Interesting Facts from the Display:
- The Julian calendar, proposed by Julius Caesar in 708 Ab urbe condita (46 BC), was a reform of the Roman calendar. It took effect on 1 January 709 AUC (45 BC), by edict.
The Julian calendar is still used in parts of the Eastern Orthodox Church and in parts of Oriental Orthodoxy as well as by the Berbers.
- The calendar was the predominant calendar in the Roman world, most of Europe, and in European settlements in the Americas and elsewhere, until it was gradually replaced by the Gregorian calendar, promulgated in 1582 by Pope Gregory XIII.
- The Gregorian calendar is the calendar used in most of the world. It is named after Pope Gregory XIII, who introduced it in October 1582. The calendar spaces leap years to make the average year 365.2425 days long.
- Every year that is exactly divisible by four is a leap year, except for years that are exactly divisible by 100, but these centurial years are leap years if they are exactly divisible by 400. For example, the years 1700, 1800, and 1900 are not leap years, but the years 1600 and 2000 are.
- The calendar was developed as a correction to the Julian calendar. To deal with the 10 days' difference (between calendar and reality) that this drift had already reached, the date was advanced so that 4 October 1582 was followed by 15 October 1582.
- The traditional Chinese calendar (officially known as the Agricultural Calendar, or Nónglì, or Lunar Calendar, is a lunisolar calendar which reckons years, months and days according to astronomical phenomena.
- Although modern-day China uses the Gregorian calendar, the traditional Chinese calendar governs holidays—such as the Chinese New Year and Lantern Festival—in both China and in overseas Chinese communities.
- Like Chinese characters, variants of this calendar are used in different parts of the East Asian cultural sphere. Korea, Vietnam, and the Ryukyu Islands adopted the calendar, and it evolved. The traditional Japanese calendar also derived from the Chinese calendar, but its official use in Japan was abolished in 1873.
- The Chinese calendar is lunisolar, so a leap year has an extra month, often called an embolismic month after the Greek word for it. In the Chinese calendar the leap month is added according to a rule which ensures that month 11 is always the month that contains the northern winter solstice.
- The Islamic calendar, also known as the Hijri, Lunar Hijri, Muslim or Arabic calendar, is a lunar calendar consisting of 12 lunar months in a year of 354 or 355 days. It is used to determine the proper days of Islamic holidays and rituals, such as the annual period of fasting and the proper time for the pilgrimage to Mecca.
- The current Islamic year is 1441 AH. In the Gregorian calendar, 1441 AH runs from approximately 1 September 2019 to 20 August 2020.
The history of Leap Year and day of February 29th itself have many interesting facets to explore. This display highlighted a handful to quickly impart intriguing information to the viewer.
We will not experience another leap year until 2024. What do you think that date has in store for us?