in reply to Is there a module for determining dates of Astronomical Seasons?

McDarren is right. You certainly don't need a module for this. Taking the response one step further FYI and others here are the dates for the Northern Hemsiphere (positive latitudes):

Spring, March 21 (Vernal Equinox)
Summer, June 22 (Summer Solstice)
Autumn, September 22 (Autumnal Equinox)
Winter, December 22 (Winter Solstice)

Note: Not neglecting our friends in the Southern Hemsiphere, I will post the dates for the Southern Hemsphere soon :) .


Update: Actually, quite simply, for our Southern Hemsiphere friends things are simply reversed.

ack! I hate typos! (especially big ones) thank you for pointing out my mistake!
I do indeed know better. :)
Spring, September 22 (Vernal Equinox)
Summer, Decmeber 22 (Summer Solstice)
Autumn, March 21 (Autumnal Equinox)
Winter, June 22 (Winter Solstice)

the correction:
Autumn, March 21 (Vernal Equinox)
Winter, June 22 (Winter Solstice)
Spring, September 22 (Autumnal Equinox)
Summer, December 22 (Summer Solstice)

Perl + Science + a bit of typo awareness (think before you type) = Loads of Fun
  • Comment on Re: Is there a module for determining dates of Astronomical Seasons?

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Re^2: Is there a module for determining dates of Astronomical Seasons?
by dorko (Prior) on Dec 01, 2005 at 19:18 UTC
    I've only had an Intro. to Astronomy course about 20 years ago, but I'm pretty sure the the way you've listed the equinox dates for the southern hemishere isn't quite right.

    Google knows all:

    Vernal Equinox: The sun is on the equator moving north, and marks the beginning of spring, (in the southern hemisphere this is the beginning of autumn).

    I'd list it like this:

    Northern Hemisphere:
    Spring, March 21 (Vernal Equinox)
    Summer, June 22 (Summer Solstice)
    Autumn, September 22 (Autumnal Equinox)
    Winter, December 22 (Winter Solstice)

    Southern Hemisphere:
    Autumn, March 21 (Vernal Equinox)
    Winter, June 22 (Winter Solstice)
    Spring, September 22 (Autumnal Equinox)
    Summer, December 22 (Summer Solstice)

    Cheers,

    Brent

    -- Yeah, I'm a Delt.
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