Greetings everybody! Nicely, it’s December, which not solely accommodates Christmas, however the first day of winter, which is normally regarded as the shortest day of the 12 months.
After all, that is solely true within the northern hemisphere. However our island is within the northern hemisphere, and we now have our shortest days in December.
Nevertheless, you could have observed I stated “days” and never “day.”
In our tropical winter, we now have a wierd time slide. Our shortest day is 11 hours and 20 minutes lengthy, however it isn’t only a single day.
The primary “shortest day” is the fifteenth and each odd-numbered day till the twenty ninth is 11 hours and 20 minutes lengthy.
The even-numbered days are 11 hours and 21 minutes lengthy.
New 12 months’s Eve, the final day of December can be 11 hours and 21 minutes lengthy and the solar will proceed to set later for a number of months.
Surprisingly sufficient, the winter solstice is on the twenty second and it isn’t one of many shortest days.
We’ll lose quarter-hour of morning daylight, however we’ll achieve 12 minutes of night daylight.
Though the solar will set later for a number of extra months, it would proceed to rise later till February, so that you’ll be getting up at nighttime for some time but.
After all, shorter days imply longer nights and meaning extra time to stargaze.
There was a waxing moon within the early night sky this week as a result of full moon was Thursday.
December’s full moon is historically known as the Chilly Moon, which doesn’t work right here, after all, however it’s additionally known as the Moon earlier than Yuletide.
Maybe we must always name it the Finish of Wet Season Moon! No matter you name it, I hope you noticed the total moon on Thursday night time as a result of it was fairly near Mars within the japanese sky.
Jupiter and Saturn are additionally in your night sky. Exit at 6:50 this week (that’s one hour after sundown) face due east and look straight up. That vibrant star to the best isn’t a star. It’s Jupiter.
Then flip round and face west. You’ll see the three vibrant stars of the Summer time Triangle to your proper.
Altair might be due west and three fist-widths above the horizon. Measure roughly 4 fist-widths to the best of Altair and also you’ll see vibrant Vega two fist-widths above the horizon and Deneb, the third star of the triangle, two fist-widths above Vega and to the best.
Now return to Altair and measure two fist-widths up and 4 fist-widths to the left. You’ll be within the neighborhood of a vibrant star.
It isn’t a star, it’s the planet Saturn. And there might be some very nice planetary information later within the month. Don’t miss a single Starry Starry Night time!
Measure three fist-widths to the left of Saturn and also you’ll discover a vibrant star.
That’s Fomalhaut, the 18th brightest star. Face due south and measure a fist-width and a half up from the horizon and a fist-width to the left and also you’ll discover Achernar, the ninth brightest star.
Now flip utterly round and face north and in case your sky is evident, you may nonetheless be capable of see the Little Dipper.
The bowl will go beneath the horizon this month. Now we have no constellations which can be within the sky for the entire 12 months.
Guam’s skies are astounding, and they’ll solely get higher. There are some great Christmas presents within the sky this month!
Pam Eastlick was the coordinator for the previous College of Guam planetarium because the early Nineties. She has been penning this weekly astronomy column since 2003. Ship any questions or feedback to email@example.com and we are going to ahead them to her.