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During the Warring States period (~475–220 BC), the primitive lunisolar calendars were established under the Zhou Dynasty, known as the six ancient calendars (simplified Chinese: 古六历; traditional Chinese: 古六曆). The months of these calendars begin on the day with the new moon, with 12 or 13 months (lunations) in a year.
This is a list of calendars.Included are historical calendars as well as proposed ones. Historical calendars are often grouped into larger categories by cultural sphere or historical period; thus O'Neil (1976) distinguishes the groupings Egyptian calendars (Ancient Egypt), Babylonian calendars (Ancient Mesopotamia), Indian calendars (Hindu and Buddhist traditions of the Indian subcontinent ...
1939 was a common year starting on Sunday of the Gregorian calendar, the 1939th year of ... firm stand is made for Poland, then Hitler will be deterred from war ...
The Yagi Antenna was widely used during World War II. After the war they saw extensive development as home television antennas. 1926: Robert H. Goddard launches the first liquid fueled rocket. 1926: Harry Ferguson, patents the Three-point hitch equipment linkage system for tractors. [461]
Fob watches were starting to be replaced at the turn of the 20th century. [189] The Swiss, who were neutral throughout World War I, produced wristwatches for both sides of the conflict. The introduction of the tank influenced the design of the Cartier Tank watch, [190] and the design of watches during the 1920s was influenced by the Art Deco ...
1871 was a common year starting on Sunday of the Gregorian calendar and a common year starting on Friday of the Julian calendar, the 1871st year of the Common Era (CE) and Anno Domini (AD) designations, the 871st year of the 2nd millennium, the 71st year of the 19th century, and the 2nd year of the 1870s decade. As of the start of 1871, the ...
In a solar calendar a year approximates Earth's tropical year (that is, the time it takes for a complete cycle of seasons), traditionally used to facilitate the planning of agricultural activities. In a lunar calendar, the month approximates the cycle of the moon phase. Consecutive days may be grouped into other periods such as the week.
1913: In Search of the World Before the Great War (2013) excerpt and text search; covers 20 major world cities; Gilbert, Martin. A History of the Twentieth Century: Volume 1 1900-1933 (1997); global coverage of politics, diplomacy and warfare; pp 269–96. Florian Illies [in French] (2013). 1913: The Year Before the Storm. Melville House.