This post has been compiled from information posted on the
internet and not written by me.
The longest day of 2013 is finally here—but this year, it comes with a
twist!
While the solstice in the northern hemisphere traditionally falls on June
21— and this year it will occur on that date at 1:04 a.m. EDT— it will begin on
Thursday, June 20, for parts of the western U.S., according to the website of
the Clark
Planetarium. The time of the solstice depends upon your position on
Earth and, as a consequence, where you are in relation to the sun.
The summer solstice occurs when Earth's axis is the most tilted
toward the sun—the angle is known as "maximum axial tilt." As a
consequence of this specific orientation, the sun rises at its most northeasterly point along the horizon
and also sets at its most northwesterly point in the northern hemisphere.
The solstice isn't the only big celestial event this week. Sky-watchers are
gearing up for the arrival of the 2013 “super-moon”, which is set to peak June
22-23 and deliver the biggest, brightest moon of the year.
Solstice celebrations …
The term solstice
can also be used in a wider sense, as the date (day) that such a passage
happens. The solstices, together with the equinoxes, are connected with the
seasons. In some languages they are considered to start or separate the
seasons; in others they are considered to be center points (in England,
in the Northern Hemisphere, for example, the period around the northern
solstice is known as midsummer, and Midsummer's
Day is 24 June, about three days after the solstice itself).
Similarly 25 December is the start of the Christmas celebration, and is the day
the Sun begins to return to the Northern Hemisphere.
Many cultures
celebrate various combinations of the winter and summer solstices, the
equinoxes, and the midpoints between them, leading to various holidays arising
around these events. For the southern solstice, Christmas is the most popular
holiday to have arisen. In addition, Yalda, Saturnalia,
Karachun,
Hanukkah,
Kwanzaa
and Yule
(see winter solstice for more) are also celebrated
around this time. For the northern solstice, Christian cultures celebrate the
feast of St. John from June 23 to 24 (see St. John's
Eve, Ivan Kupala Day, Midsummer), while Neopagans
observe Midsummer, also known as Litha. For the vernal (spring) equinox,
several spring-time festivals are celebrated, such as the Persian Nowruz, the
observance in Judaism
of Passover
and in most Christian churches of Easter. The autumnal equinox has also given rise to various
holidays, such as the Jewish holiday of Sukkot. At the
midpoints between these four solar events, cross-quarter
days are celebrated.
In many
cultures, the solstices and equinoxes traditionally determine the midpoint of
the seasons, which can be seen in the celebrations called midsummer and midwinter.
In this vein, the Japanese
celebrate the start of each season with an occurrence known as Setsubun.
The cumulative cooling and warming that result from the tilt of the planet
become most pronounced after the solstices, leading to the more recent
custom of using them to mark the beginning of summer and winter in most
countries of Central and Northern
Europe, as well as in Canada, the USA and New Zealand.
In the Hindu
calendar, two sidereal solstices are named Makara
Sankranti which marks the start of Uttarayana
and Karkat Sankranti which marks the start of Dakshinayana. The former occurs
around January 14 each year, while the latter occurs around July 14 each year.
These mark the movement of the Sun along a sidereally fixed zodiac (precession is ignored) into Makara, the
zodiacal sign which corresponds with Capricorn, and into Karkat, the zodiacal
sign which corresponds with Cancer, respectively.
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