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Autumn, also known as fall, [1] is one of the four temperate seasons on Earth. Outside the tropics, ... Similarly named festival holidays occur in Germany and Japan.
The Fall Equinox is an astronomical prediction of when the sun will cross the equator, and that tends to occur between September 22 and September 23 on the traditional Gregorian calendar. What Is ...
Why does fall equinox happen? This image of Earth was taken on September 22, 2015. There are only two times each year that the Earth's axis is neither tilted toward or away from the sun.
In temperate and sub-polar regions, four seasons based on the Gregorian calendar are generally recognized: spring, summer, autumn (fall), and winter. Ecologists often use a six-season model for temperate climate regions which are not tied to any fixed calendar dates: prevernal, vernal, estival, serotinal, autumnal, and hibernal.
The autumnal equinox officially marks the start of fall. The word " equinox " comes from the Latin words "aequus" and "nox," which mean "equal or even" and "night," respectively.
The seasons occur because the Earth's axis of rotation is not perpendicular to its orbital plane (the plane of the ecliptic) but currently makes an angle of about 23.44° (called the obliquity of the ecliptic), and because the axis keeps its orientation with respect to an inertial frame of reference. As a consequence, for half the year the ...
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In Korea, Chuseok is a major harvest festival and a three-day holiday celebrated around the Autumn Equinox. The Mid-Autumn Festival is celebrated on the 15th day of the 8th lunar month, often near the autumnal equinox day, and is an official holiday in mainland China, Hong Kong, Taiwan and in many countries with a significant Chinese minority ...