Happy Vernal Equinox   3 comments

Bring on the light!  The first day of spring, or vernal equinox, is a time for celebration in the northern hemisphere.

Bring on the light! The first day of spring, or vernal equinox, is a time for celebration in the northern hemisphere.

This is the day that makes everybody in the northern hemisphere happy.  It is spring (vernal) equinox.  That means the first day of spring, the day when daytime and nighttime are equal in length (thus “equi” and “nox” – night).  It’s been happening in recent years on the 21st in North America, so some think that it always occurs on this day.

The fact is, the 20th is just as likely as the 21st.  After all, the event is not tied to a date.  It happens when the sun lines up with the equator.  Since the earth is tilted as it goes around the sun, there are only two times during the year that this happens:  once in spring and once in fall (the autumnal equinox).

This annular eclipse, though different from an equinox, reminds us of the different movements of Sun, Earth and Moon.

This annular eclipse, though different from an equinox, reminds us of the different movements of Sun, Earth and Moon.

The other astronomically-significant days on the calendar, the solstices, are when the earth is tilted at its maximum angle with respect to the sun, and so represent the longest (winter) and shortest (summer) days of the year.  On solstices, I have had the habit of trying to do something awesome.  As with my birthday, if I’m not working I try to get out and hike, ski or otherwise enjoy the outdoors.  Climbing a mountain is a favorite.

I have never really thought of equinoxes in the same way.  Maybe it’s time to change this.  I thought I would look through my picture catalog over the last few years, searching by date taken, to find out if I had accidentally done something awesome on the vernal equinox.

The sun rises over the Guatemalan highlands, as viewed from the summit of the highest mountain in Central America, Tajamulco.

The sun rises over the Guatemalan highlands, as viewed from the summit of the highest mountain in Central America, Volcan Tajamulco.

It turns out I had, on the 21st of March in 2010.  In western Guatemala, I climbed to the summit of Tajamulco, the highest mountain in Central America.  We had camped not far below the summit the night before, and before sunrise we climbed the final 800 feet or so.  The sunrise was spectacular.  Hope you enjoy the photos.  Remember to click on any you are interested in purchasing.  They are copyrighted and not available for free download, sorry.   Happy Equinox wherever you may be!

Offerings at the summit of Tajamulco, Guatemala.  A lone climber stands in the shadow of the mountain.

Offerings at the summit of Tajamulco, Guatemala. A lone climber stands in the shadow of the mountain.

Advertisements

3 responses to “Happy Vernal Equinox

Subscribe to comments with RSS.

  1. The sun rises over the Guatemalan highlands is a stunning shot! Thank you for explaining the equinox and solstices.

  2. And the same to you!

  3. Enjoy your vernals! It’s autumnal down here in the half of the globe that points into the galaxy 🙂

Please don't be shy; your words are what makes my day!

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: