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Monday, March 19, 2012

PRIMAvera 2012 .. prima ! ... 8-)

La PRIMAvera quest'anno inizia PRIMA ;-)
Il 29 febbraio non ce lo siamo scordati vero !!!
Oggi 20 marzo ... è già Primavera. Un giorno prima !
... 


http://it.wikipedia.org/wiki/Precessione_degli_equinozi
http://www.cosediscienza.it/tempo/06_ricerca.htm
http://leonardo.blog.rai.it/2012/03/19/puntata-di-lunedi-19-marzo-2012/
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Capsella b.p. ( http://twitpic.com/90jyum )
Lamium ( http://twitpic.com/90kd3z )
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Spring equinox Google doodle heralds change of season
http://www.guardian.co.uk/technology/2012/mar/20/spring-equinox-google-doodle
  Spring equinox celebrated in a Google doodle
 

Search engine puts Marimekko design on homepage to mark end of winter and beginning of spring in northern hemisphere
Spring equinox celebrated in a Google doodle. Photograph: Screengrab
Google marked the vernal equinox, or the first day of Spring, using a doodle based on a design by Marimekko, the the Finnish textile company famous for its bright, bold prints.
Spring has historically started on the day of the vernal equinox, which occurs on the night of 20/21 March.
An equinox is one of two times during the year when the length of day and the length of night are just about equal while the word vernal comes from the Latin word for bloom. It refers to the fact that this equinox marks the end of winter and the beginning of spring in the northern hemisphere.
Astronomers have defined an equinox as that moment when the sun arrives at one of two intersection points of the ecliptic, the sun's path across the sky, and the celestial equator, earth's equator projected onto the sky.
The date is particularly significant for pagans, many of whom carry out rituals, while others indulge in activities such as egg races, egg hunts and egg eating and egg painting. A number of Spring harvest festivals are celebrated at this time while Vernal Equinox Day is a national holiday in Japan, when families visit graves and hold reunions.
The Persian new year, Nowruz, also corresponds with the vernal equinox while many Iranians, Kurds and others will celebrate the 13-day festival.


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