Latest topics
» RH- Blood Type ~ Why Johnny Depp, Paul McCartney And Leonardo DiCaprio Can Not Be Cloned
Today at 9:21 pm by PurpleSkyz

» Highlands, New Jersey- An Active Shooter Drill has been scheduled for some time in April 2018 for Henry Hudson Regional High School
Today at 9:18 pm by PurpleSkyz

» "INTERROGATING ZUCKERBERG" — A Bad Lip Reading
Today at 9:15 pm by PurpleSkyz

» POOFness for APR 25: MIDWEEK BY ZAP the CONMAN PANHANDLING GHOUL BARBER of CALGARY
Today at 8:47 pm by robert18

» The Ego - Friend or Obstacle?
Today at 7:06 pm by PurpleSkyz

» Answer to "Virgo Triad" By Anna Von Reitz plus more
Today at 5:42 pm by WilliaminUSA

» "Judge" Anna Von Reitz Exposed
Today at 3:54 pm by PurpleSkyz

» Out Of Mind Viewer Poll ~ "What Will Jerzy/ZAP Beg For This Week?" ~ Guests welcome to vote
Today at 3:41 pm by PurpleSkyz

» A Summary Of Hoaxes By Deborah Tavares by snoop4truth
Today at 3:10 pm by PurpleSkyz

» “We can build these models, but we don’t know how they work.”
Today at 2:21 pm by topspin2

» The Most Honest Three Minutes In Television History
Today at 2:13 pm by LadyDragon

» Reel Thyme
Today at 1:45 pm by Consciousness Of Economic

» BLISSPEDIA is a SCAM
Today at 12:56 pm by Consciousness Of Economic

» Doctor Confirms Worldwide Chem-Lung Disease; Daily Chemtrail Spraying is Relentless Now
Today at 11:52 am by Consciousness Of Economic

» Graham Hancock the Mystery of Ancient Human Origins Has Finally Been Solved
Today at 10:03 am by PurpleSkyz

» Q #ENDGAME: MSMHate, Red Cross, PP, Climate GENOCIDE
Today at 10:01 am by PurpleSkyz

» David Icke live on the Regina Meredith Show (Part One)
Today at 9:59 am by PurpleSkyz

» Merck Fighting Fraud Lawsuits in U.S. Courts on MMR and Gardasil Vaccines
Today at 9:58 am by PurpleSkyz

» UFO Found In The Apollo Archives?
Today at 9:55 am by PurpleSkyz

» 1200 Ton Unfinished Obelisk At Aswan Egypt: What Caused Work To Suddenly Stop?
Today at 9:54 am by PurpleSkyz

» NIBIRU News ~ Clear VIEW NIBIRU System In California sunrise plus MORE
Today at 9:27 am by PurpleSkyz

» UFO News ~ Giant Glowing Worm flys Through Sky To Enter UFO, Chile plus MORE
Today at 9:22 am by PurpleSkyz

» Cloning and Immortality
Today at 8:09 am by topspin2

» Divers Trying To Save Drowning Whale Are Blindsided By Its Unexpected Response
Today at 1:44 am by MartyM

» POOFness for APR 23: LIFE AND OXYGEN MORE BS FROM THE GHOUL BARBER OF CALGARY
Today at 1:21 am by RamblerNash

» Ancient Astronaut Found In Serbia?
Today at 12:11 am by PurpleSkyz

» Karen Hudes ~ Network of Global Corporate Control 4 24 18
Today at 12:10 am by PurpleSkyz

» Yellowstone Incident: Bright Sphere Explodes, Strange Dead Body, UFO Descends!
Today at 12:08 am by PurpleSkyz

» UNSEALED: HRC, Uranium 1, Comey, BUNDY Ranch, M_rder #CASE1:16-cv-01490-LEK-DJS
Today at 12:05 am by PurpleSkyz

» E-mail from ZAP: A TREE WITH NO PARTRIDGE (Wait until you get a load of what they are shoveling now!)
Yesterday at 11:35 pm by RamblerNash

» UPDATE - #89 in Holistic Doctor Series Shot 5 Times In Front of Family (World Famous Healer)
Yesterday at 10:58 pm by PurpleSkyz

» Wildlife Acting Even More Strange!
Yesterday at 9:09 pm by PurpleSkyz

» WISCONSIN TO USE NATIONAL GUARD IN “LONG TERM POWER OUTAGE” DRILL (Door-to-Door Wellness Checks!)
Yesterday at 8:39 pm by PurpleSkyz

CURRENT MOON

You are not connected. Please login or register

Out Of Mind » SOLAR & PLANETARY ALERTS & INFO » ATMOSPHERIC CHANGES » March equinox: All you need to know

March equinox: All you need to know

Go down  Message [Page 1 of 1]

1 March equinox: All you need to know on Sun Mar 18, 2018 9:11 am

PurpleSkyz

avatar
Admin

March equinox: All you need to know

By Deborah Byrd in Astronomy Essentials | March 18, 2018
The 2018 equinox comes March 20 at 16:15 UTC. It’s an event that happens on our sky’s dome – and a seasonal marker in Earth’s orbit around the sun.

Image from 2011, via Geosync.
Although there’s nothing official about it, it’s traditional to say the March or vernal equinox signals the beginning of spring in the Northern Hemisphere and autumn in the Southern Hemisphere. This equinox does provide a hallmark for the sun’s motion in our sky, marking the passage of the sun across the celestial equator, going from south to north. The March 2018 equinox happens on March 20 at 16:15 UTC, which is 11:15 a.m. Central Daylight Time for us in the central U.S.; translate to your time zone.
In the Northern Hemisphere now, we’re enjoying earlier sunrises, later sunsets, softer winds, sprouting plants. Meanwhile, you’ll find the opposite season – later sunrises, earlier sunset, chillier winds, dry and falling leaves – south of the equator.
For all of us on this March 2018 equinox, the moon will be in a waxing crescent phase, in your western sky after sunset, with its illuminated portion pointing downward toward the planets Venus and Mercury.
Watch for them!

On March 18 to 20, look west after sunset to see the moon near the 2 innermost worlds of the solar system, Mercury and Venus. Read more.
The equinoxes and solstices are caused by Earth’s tilt on its axis and ceaseless motion in orbit. You can think of an equinox as happening on the imaginary dome of our sky.
The Earth-centered view is that the celestial equator is a great circle dividing Earth’s sky into Northern and Southern hemispheres. The celestial equator wraps the sky directly above Earth’s equator. At the equinox, the sun crosses the celestial equator, to enter the sky’s Northern Hemisphere.
The Earth-in-space view is that, because Earth doesn’t orbit upright, but is instead tilted on its axis by 23-and-a-half degrees, Earth’s Northern and Southern hemispheres trade places in receiving the sun’s light and warmth most directly, as Earth orbits the sun. We have an equinox twice a year – spring and fall – when the tilt of the Earth’s axis and Earth’s orbit around the sun combine in such a way that the axis is inclined neither away from nor toward the sun.

Cherry blossoms opening in Japan, via EarthSky community member Beverly Fish.
At the equinox, Earth’s two hemispheres are receiving the sun’s rays equally. Night and day are often said to be equal in length. In fact, the word equinox comes from the Latin aequus (equal) and nox (night). For our ancestors, whose timekeeping was less precise than ours, they likely did seem equal. But we today know it’s not exactly so. Read more: Are day and night equal at the equinox?

The day arc of the sun, every hour, during the equinox as seen on the celestial dome, from the pole. Image via Tau’olunga at Wikimedia Commons.
Here’s another equinox truism. You might hear that the sun rises due east and sets due west at the equinox. True? In fact, this is true. And that’s true no matter where you live on Earth. At the equinoxes, the sun appears overhead at noon as seen from Earth’s equator, as the illustration above shows. This illustration shows the sun’s location on the celestial equator, every hour, on the day of the equinox.
No matter where you are on Earth, you have a due east and due west point on your horizon. That point marks the intersection of your horizon with the celestial equator – the imaginary line above the true equator of the Earth.
That’s why the sun rises due east and sets due west for all of us. The sun is on the celestial equator, and the celestial equator intersects all of our horizons at points due east and due west. Read more: Sun rises due east and sets due west
Since Earth never stops moving around the sun, the position of the sunrise and sunset – and the days of approximately equal sunlight and night – will change quickly.
The video below was the Astronomy Picture of the Day for March 19, 2014. APOD explained:
At an equinox, the Earth’s terminator – the dividing line between day and night – becomes vertical and connects the north and south poles. The time-lapse video [below] demonstrates this by displaying an entire year on planet Earth in 12 seconds. From geosynchronous orbit, the Meteosat satellite recorded these infrared images of the Earth every day at the same local time. The video started at the September 2010 equinox with the terminator line being vertical. As the Earth revolved around the sun, the terminator was seen to tilt in a way that provides less daily sunlight to the northern hemisphere, causing winter in the north. As the year progressed, the March 2011 equinox arrived halfway through the video, followed by the terminator tilting the other way, causing winter in the southern hemisphere — and summer in the north. The captured year ends again with the September equinox, concluding another of billions of trips the Earth has taken — and will take — around the sun.



https://youtu.be/LUW51lvIFjg

Where can you look to see signs of the equinox in nature? Everywhere! Forget about the weather for a moment, and think only about the daylight. In terms of daylight, the knowledge that spring is here – and summer is coming – permeates the northern half of Earth’s globe.
Notice the arc of the sun across the sky each day. You’ll find it’s shifting toward the north. Responding to the change in daylight, birds and butterflies are migrating back northward, too, along with the path of the sun.
The longer days do bring with them warmer weather. People are leaving their winter coats at home. Trees are budding, and plants are beginning a new cycle of growth. In many places, spring flowers are beginning to bloom.
Meanwhile, in the Southern Hemisphere, the days are getting shorter and nights longer. A chill is in the air. Fall is here, and winter is coming!

The equinox is an event that takes place in Earth’s orbit around the sun.
Bottom line: The 2018 equinox comes March 20 at 16:15 UTC; translate to your time zone. It’s an event that happens on our sky’s dome – and a seasonal marker in Earth’s orbit around the sun!
A Chinese perspective on the spring equinox

Deborah Byrd



Thanks to: http://earthsky.org



  

Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum