Showing posts with label winter. Show all posts
Showing posts with label winter. Show all posts

December 21 - Anniversary of a Solstice Eclipse

 Posted on December 21, 2021


This is an update of my post published on December 21, 2010:




A fairly rare event—the total eclipse of the moon—and a once-a-year event—winter solstice—happened on the same day on this date in 2010.

On that day, I wrote: "Here in Southern California, we seem to be living at the bottom of a very big shower stall right now, because it's been raining HARD for days. (I know many people have to deal with this much rain on a regular basis, but we're used to drought and earthquakes, not flooding and inundation!) ...The point is, we couldn't see the eclipse because of the total cloud cover."

A total lunar eclipse is when the Earth gets between the Moon and the Sun, and the Moon falls totally within Earth's shadow. The Moon, which is full or nearly full, usually shines (reflecting the Sun's light) a bright white color, but during an eclipse, the moon seems to become gray, then orange, then deep red.



Here are some photos of a more recent lunar eclipse,
all put together into one photo so we can see the
changing color of the Moon.


The winter solstice is the shortest day of the year—and, of course, the longest night. Most cultures nowadays count the winter solstice as the day that winter begins.


NOTE: Most of the world's population lives in the northern hemisphere. However, millions of people live in the southern hemisphere, and today is their SUMMER solstice—the shortest night and the longest day of the year!


How do (and have) people celebrate(d) the winter solstice?

Germanic countries (including the Scandinavian countries), long before Christianity in Europe, held a winter festival called Yule or Yule-tide during the solstice. Customs such as burning a Yule log, decorating the house with evergreen branches and wreaths, lighting candles, eating a Yule feast, and Yule-tide singing (or Wassailing)—all of these solstice customs are now commonly associated with Christmas. Characters that haven't made it into widespread use in Christmas traditions include the Yule goat, pictured here:

 
Yule Lads, from Iceland's Yule celebrations, haven't caught on in the U.S. - except maybe they have, in the form of elves and gnomes?




A Druidic tradition (think of the people who built England's Stonehenge) calls the winter solstice “Alban Arthuan,” which means Light of Arthur, or “Alban Arthan,” which means Light of Winter. A poetic interpretation of the Light of Arthur is that the legendary figure of King Arthur (of “Knights of the Round Table” fame) still sleeps in a mountain, ready to return to his people if he is needed. The Druidic holiday colors are red, green, and white—again, colors that today are often associated with Christmas.



Ancient Rome celebrated Saturnalia for a week around the solstice. There were some nice aspects of the holiday—wars were interrupted by temporary truces, for example, and slaves were served by their masters—and there were some familiar customs such as exchanging gifts and lighting candles. However, apparently the holiday eventually started to become less fun, with too much wild behavior and even crime.


Other places in the world celebrate the solstice with bonfires, ritual baths and purification rites, feasting, and even special dances.

Special places for celebrating the solstice...

  • Newgrange is a beautiful megalithic site in Ireland, with a huge circular stone structure estimated to be around 5,000 years old (older, even, than the Egyptian pyramids at Giza!). It was built so that a shaft of sunlight would illuminate a particular special spot on the dawn of winter solstice.



(By the way, a megalith is a huge stone used to build a structure or monument.)

  • The Sun Dagger of Chaco Canyon, New Mexico, was built about a thousand years ago. A modern-day artist noticed that, during the summer solstice, a slender beam of sunlight passing between two rock monoliths exactly bisected a spiral-shaped symbol. She came back to the spot on the winter solstice and, sure enough, a ray of sunlight bisected another, smaller spiral. Unfortunately, so many people have gone to see the sight of these daggers of sunlight, the trail eroded, the monoliths shifted, and the Sun Daggers no longer bisect the spirals!




  • The Great Zimbabwe in sub-Saharan Africa may have helped medieval astronomers track celestial bodies; modern-day scholars note that the brightest stars in Orion line up with several monoliths during the winter solstice.






December 22 - First Day of Winter in Hong Kong

Posted on December 22, 2020 

This is an update of my 12/10/2009 post:



Many of us in 
the Northern Hemisphere have yesterday, December 21, listed as the first day of winter. But the idea of “the first day of winter” is a human invention. We could choose just about any day as the first of winter.


The solstice (which occurred yesterday, December 21 - this year!) is based on nature – yesterday was, in fact, the longest day / shortest night for people in the Southern Hemisphere and the shortest day / longest night in the Northern Hemisphere. That's nothing to do with humans and their calendars—it's to do with the tilt of Earth's axis and how that works to make colder and warmer seasons. How we actually divvy up the year into the seasons, however, depends on human ideas and rules and traditions.



In America and much of the rest of the world, the first day of winter is the winter solstice, even though that means that as soon as we reach winter, the days begin to get longer and longer and the sunlight more and more direct. In these countries, most of December is fall, not winter, and most of March is winter, not spring. Also, in America and all those other countries that have the first day of winter hooked to a natural event, it occurs on different days in different years: the solstice can occur any time between the 20th and the 23rd of December.


Some people think that solstice should be a mid-season celebration. According to that concept, December 21 would be the halfway-mark of winter (for the Northern Hemisphere).


Apparently, Australia organizes its calendar differently yet, aside from the fact that it is a Southern-Hemisphere country that has seasons opposite of Northern countries. In Australia the first day of winter is the first of the month in which the winter solstice occurs (so therefore June 1) and the first day of summer is the first of the month in which the summer solstice occurs (December 1). Australians can count their seasons by whole months while much of the world has to deal with fractions of months.

And for some reason, Hong Kong apparently has its first day of winter one day after much of the rest of the world: today!




Why do we always privilege what's happening in the Northern Hemisphere?

If you could slice the earth in half along the equator, by definition the two pieces would be exactly the same size. 




However, they would be really unequal in both land and people! Although the Southern Hemisphere includes much of South America, part of Africa, and all of Antarctica and Australia, the southern half of the earth only has half as much land as the northern half. Because Antarctica is barely settled by humans (there are a few scientific outposts), the population comparison is even more drastic: only 10 to 20% of the world's population lives in the Southern Hemisphere.

Why is the earth "north-heavy"? It is just an accident of timing. Because the earth's continents drift about (in a process called plate tectonics), there have been 
times in the past when the Southern Hemisphere had more land. At one time, almost 100% of the land on earth was in one huge super-continent that happened to be south of the equator. Now two thirds of earth's dry land just happens to be north of the equator.



Snow Stuff

If there is snow where you live, you may already be sick of shoveling it. Lots of kids who live in snow have fun making snow people, tunnels, forts, snowball fights, and so forth. But even those of us who DON'T live where it snows can enjoy making snow pictures.


How about torn-paper pictures?

The idea here is to tear regular white paper into fluffy little pieces that can fall down a bright blue construction paper sky and pile up in drifts and create snowmen and so forth.

Sponge painting
Cut a corner off of a sponge and use it to dab white paint onto a darker background. Be sure to pat the sponge a few times on the edge of the palette or on a piece of scrap paper so that it isn't too thick on the sponge—you want a feathery feel for your snowy landscapes.

Collage
Cut up white feathers or pull apart cotton balls to make faux snow that you can glue to a picture.

Kirigami
Of course you already know how to fold paper to cut snowflakes, right?


Word Puzzle
There are at least 18 words on this banner. How many can you find? (Find little and big words within the long string of letters. A word can start and stop anywhere, but don't skip any letters, and don't rearrange the letters. (Answers below.)
ANSWERS:

1. HO 
2. HOLIDAY 
3. LID 
4. I 
5. ID 
6. DAY 
7. A 
8. YOU 
9. YOUTH 
10. OUT 
11. THE 
12. THEN 
13. HE 
14. HEN 
15. ENJOY 
16. JOY 
17. JOYFUL 
18. FULL