I believe winter runs from Dec 21 to Mar 21, or that's how it did in Europe. PreZ says it's Dec 1 - Mar 1.
A UK maritime museum said:
"Thus Spring is deemed to start at the Vernal Equinox (near March 21), Summer at the Summer Solstice (near June 21), Autumn at the Autumn Equinox (near September 21) and Winter at the Winter Solstice (near December 21). In the southern hemisphere the cycle is displaced by half a year."
The author does also note:
"As a compromise, because they are well defined dates, the equinoxes and solstices are probably as good as any other criterion. I myself prefer the simple use of three calendar months for each season with Spring being March, April and May, etc."
And it's not easy figuring out when it is when a Google search for 'spring season start' brings up way too many sports and other references to seasons of something or the other beginning.
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Date: 2004-03-08 11:43 am (UTC)A UK maritime museum said:
"Thus Spring is deemed to start at the Vernal Equinox (near March 21), Summer at the Summer Solstice (near June 21), Autumn at the Autumn Equinox (near September 21) and Winter at the Winter Solstice (near December 21). In the southern hemisphere the cycle is displaced by half a year."
The author does also note:
"As a compromise, because they are well defined dates, the equinoxes and solstices are probably as good as any other criterion. I myself prefer the simple use of three calendar months for each season with Spring being March, April and May, etc."
And it's not easy figuring out when it is when a Google search for 'spring season start' brings up way too many sports and other references to seasons of something or the other beginning.