Seasons of 2011:
SPRING EQUINOX March 20
SUMMER SOLSTICE June 21
FALL EQUINOX September 23
WINTER SOLSTICE December 22

The four seasons are determined by changing sunlight…how the earth orbits the sun and the tilt of its axis.

  • At the start of spring—the vernal equinox—day and night are each approximately 12 hours long (with the actual time of equal day and night, in the Northern Hemisphere, occurring a few days before the vernal equinox). The Sun crosses the celestial equator going northward; it rises exactly due east and sets exactly due west.
  • At the summer solstice, the longest day of the year, the Sun reaches its most northern point in the sky at local noon. After this date, the days start getting shorter.
  • Fall begins at the autumnal equinox. Day and night are each about 12 hours long (with the actual time of equal day and night, in the Northern Hemisphere, occurring a few days after the autumnal equinox). The Sun crosses the celestial equator going southward; it rises exactly due east and sets exactly due west.
  • The start of winter begins with the winter solstice, the shortest day of the year, when the Sun reaches its most southern point in the sky at local noon. After this date, the days start getting longer.

This entry was posted on Tuesday, March 15th, 2011 at 4:51 pm and is filed under Gardening Tips, Positive Notes and Inspiration. You can leave a comment and follow any responses to this entry through the RSS 2.0 feed.

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