The (Winter, Spring, Summer, and Fall) Solstices Explained, Science Version

Winter solstice, spring solstice, summer solstice, fall solstice explainedUPDATE, 19 December 2013: This year’s winter solstice/December Solstice in Universal Coordinated Time is on Saturday, December 21, 2013 at 17:11 UTC. If you want to find the data and time specific to your geographical location, please visit Time and Date). And now, back to the post from 2010….

Do you remember why we have a winter solstice (also referred to as an equinox)? I don’t. I know I studied this in grade school, but my memory of the “why” is a bit short after all these years!

This year’s winter solstice “will occur at 23:38 (or 11.38pm) Coordinated Universal Time (UTC) on December 21, 2010” ( I looked up information about the winter solstice. The video below explains the data behind the four seasons most of us experience in the northern and southern hemispheres.

Do you remember all of this information about the solstices from your science teachers in K-12?

If you would like more information about the science and cultural norms regarding the various solstices, please look at

Please let me know what you think....