Tag Archive | precession

2020 Spring Equinox In New Hampshire: Thursday, March 19 at 11:49 pm (Eastern); 03:49 Greenwich.

by Anura Guruge


Happy Spring Equinox 2020.

[It is also called the Vernal Equinox
— that being the Latin for ‘Spring’.]

Click to ENLARGE.


I also share with you “Spring“.

Please enjoy.


Sunrise/Sunset for New Hampshire as of the
2020 Spring Equinox.

Notice that it is NOT EXACTLY 12 hours of sunlight on the Equinox.
That is mainly because we are so good at measuring time.
It has to do with the so called precession of the Earth’s axis.
Our rotation WOBBLES like a spinning top.

From, of course (where else), ‘timeanddate.com‘.

Click to ENLARGE and view here.
Use link below for original.

Click here for the ‘timeanddate.com’ original.


Yes, we are USED to the Spring Equinox being on March 20 (or 21).

Click to ENLARGE. Also from ‘timeanddate.com’.


This is the earliest it has been in the US in 124 years.

The key here, however, is ‘US’. It is still March 20 in Greenwich — and to us astronomers that is good enough.

Rather convoluted explanation as to why it is this early. If you really want to know, here is a link.

But note, it will again be March 19 — in the US — in 4-years. Yes, that it is also a LEAP YEAR does have a bearing.


As is my custom let me also please share some
catching ‘Allegories of Spring’.

 

 


Related posts:
Search ‘Spring Equinox’.
Check Category ‘astronomy’.


by Anura Guruge

2019 Spring Equinox In New Hampshire: Wednesday, March 20 at 5:58 pm (Eastern); 21:58 Greenwich.

by Anura Guruge


Happy Spring Equinox 2019.

[It is also called the Vernal Equinox
— that being the Latin for ‘Spring’.]

Click to ENLARGE.


I also share with you “Spring“.

Please enjoy.


Sunrise/Sunset for New Hampshire as of the
2019 Spring Equinox.

Notice that it is NOT EXACTLY 12 hours of sunlight on the Equinox.
That is mainly because we are so good at measuring time.
It has to do with the so called precession of the Earth’s axis.
Our rotation WOBBLES like a spinning top.

From, of course (where else), ‘timeanddate.com‘.

Click to ENLARGE and view here.
Use link below for original.

Click here for the ‘timeanddate.com’ original.


As is my custom let me also please share some
catching ‘Allegories of Spring’.


Related posts:
Search ‘Spring Equinox’.
Check Category ‘astronomy’.


by Anura Guruge

2018 Spring Equinox In New Hampshire: Tuesday, March 20 at 12:15 pm (Eastern); 16:15 Greenwich.

by Anura Guruge


Happy Spring Equinox 2018.

[It is also called the Vernal Equinox
— that being the Latin for ‘Spring’.]

Click to ENLARGE.


I also share with you Donovan’s haunting
“Lullaby of Spring”

Please enjoy.


Sunrise/Sunset for New Hampshire as of the
2018 Spring Equinox.

Notice that it is NOT EXACTLY 12 hours of sunlight on the Equinox.
That is mainly because we are so good at measuring time.
It has to do with the so called precession of the Earth’s axis.
Our rotation WOBBLES like a spinning top.

From, of course (where else), ‘timeanddate.com‘.

Click to ENLARGE and view here.
Use link below for original.

Click here for the ‘timeanddate.com’ original.


As is my custom let me also please share some
catching ‘Allegories of Spring’.


Related posts:
Search ‘Spring Equinox’.
Check Category ‘astronomy’.


by Anura Guruge

2017 Spring Equinox In New Hampshire: Monday, March 20 at 6:29 am (Eastern); 10:29 Greenwich.

by Anura Guruge


Happy Spring Equinox 2016.

[It is also called the Vernal Equinox
— that being the Latin for ‘Spring’.]

Click to ENLARGE.


John William North (British), 1888–90


I also share with you, “The Beauty of Spring”.

Please enjoy.


Sunrise/Sunset for New Hampshire as of the
2017 Spring Equinox.

Notice that it is NOT EXACTLY 12 hours of sunlight on the Equinox.
That is mainly because we are so good at measuring time.
It has to do with the so called precession of the Earth’s axis.
Our rotation WOBBLES like a spinning top.

From, of course (where else), ‘timeanddate.com‘.

Click to ENLARGE and view here.
Use link below for original.


Click here for the ‘timeanddate.com’ original.


Related posts:
++++ Search ‘Spring Equinox’ for posts from prior years >>>>

++++ Check Category ‘astronomy’ >>>>


by Anura Guruge

Monday, June 20, 2016 Will See The Latest Sunset & Longest Day For New Hampshire.

by Anura Guruge


2016nhlongestdaysaaa

Click to ENLARGE. From “Time and Date”. See link below.

Click here to access “Time and Date“.


Yes, sirree, the 2016 Summer Solstice is indeed on Monday, June 20, 2016.

Hence why it is the longest day of 2016.

But NOTE, however, how the sunset stays at 8:30 pm till July 1, 2016, i.e., 12 days.

The sunrise times start getting later much faster.

In 12 days we would have lost 40 seconds of daylight time.

The Summer Solstice is my LEAST favorite day of the year! For me it is when days start getting shorter — telling me that winter is on the way. It is the only real way of looking at it. SMILE.


Related posts:
++++ Search ‘Equinox& ‘Solstice’ for posts from prior years >>>>
++++ Check Category ‘astronomy’ >>>>


by Anura Guruge

2016 Spring Equinox In New Hampshire Will Be On Sunday, March 20 at 12:30 am (Eastern); 04:30 Greenwich.

by Anura Guruge


Happy Spring Equinox 2016.

As is my custom let me please share some
catching ‘Allegories of Spring‘.

[It is also called the Vernal Equinox
— that being the Latin for ‘Spring’.]

Click to ENLARGE.

Polish Jerzy Siemiginowski-Eleuter (c. 1660 – c. 1711).

Thought to be British (Scottish) Arthur Henry Jenkins (1871 – 1940).

German Alexander Bruckmann (1806 – 1852).

German Johannes Kleinschmidt (1858 – 1905).


I also share with you, “Sunrise, Sunset”
from “Fiddler on the Roof“.

Please enjoy.

sprin2016fiddler

Click to access YouTube video.


Sunrise/Sunset for New Hampshire up to/after the
March 20, 2016 Spring Equinox.

Notice that it is NOT EXACTLY 12 hours of sunlight on the Equinox.
That is mainly because we are so good at measuring time.
It has to do with the so called precession of the Earth’s axis.
Our rotation WOBBLES like a spinning top.

From, of course (where else), ‘timeanddate.com‘.

Click to ENLARGE and view here.
Use link below for original.


Click here for the ‘timeanddate.com’ original.


Related posts:
++++ Search ‘Spring Equinox’ for posts from prior years >>>>

++++ Check Category ‘astronomy’ >>>>


by Anura Guruge

This Weekends Much Hyped ‘Super Moon’ Is ‘Special’, But Not Earth Shattering. We Actually Have ‘3’, Yes ‘3’, In A Row!

Anura Guruge, June 8, 2013.

..
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by
Anura Guruge


Related post:
>> March 2013 ‘Worm’ Full Moon over
>> Alton — Mar. 30, 2013.

++++ Check CATEGORY ‘Astronomy‘ on sidebar for other posts >>>>


The deal with a ‘Super Moon’ is that it is close to full (if not at full) and very close to Earth (if not at its closest).

Obviously we get a full moon each month, or to be precise each Lunar Month which is 27.322 days — rounded up to the ’28’ days that determine women’s cycles etc. So full moons, especially to Buddhists, are always ‘special’, but are really common or garden.

Being closest to Earth also happens each and every month — without fail. If it didn’t we would all be in a heap of trouble! Nearly all, if not all, solar system objects have non-circular orbits. Rather than circular the orbits that nearly everything falls into is an elliptical orbit — i.e., an elongated orbit. The degree of this elongation is referred to as Orbital Eccentricity, ‘0’ denoting a perfect circle and ‘1’ a parabolic (i.e., football shaped) orbit. Closer to ‘0’, the more circular, closer to ‘1’ the more elongated. Most of the planets have near-circular orbits, though they are not circular. Earth’s eccentricity is 0.0167. Mercury has the most elongated orbit at 0.2056, with Pluto, now a dwarf planet, having one of 0.248. Comets, which originate at the furthest edges of the solar system have very high eccentricity, Comet ISON, C/2012 S1 (ISON), having an eccentricity close to ‘1’!

The Moon’s eccentricity is 0.054906.

Here are some cute diagrams from ‘Google’ that will explain this whole notion of elliptical orbits, perigee and apogee. [When talking of orbits around the Sun the comparable terms used are ‘perihelion’ (closest) and ‘aphelion’ (furthest).

How the orbits of comets, in this case periodics which are NOT as elongated as long-term comets, compare in terms of the gas giants.

The Moon’s distance at perigee (which varies slightly from month to month due to some complicated precession motions) varies between 221,324.4 miles to 230,018.4 miles, the average 225,670 miles.

The apogee, on average, is at 252,088 miles.

So this weekend we get both a full moon and one that is at apogee — these two events happening very close together tomorrow morning between 7:11 am and 7:33 am in the Southern sky (very close to the horizon) over New Hampshire. I will be asleep. It will be quite spectacular tonight too. 

But, to be fair we had a Super Moon in May and another one in July — those the in both those cases the perigee was within 90% of closest as opposed to 100%. That is why tomorrow’s is more ‘special’ than most.

On AVERAGE we get 2 to 3 Super Moons each year — keyword here being ‘average’.

This weekend the brightness of the moon, measured per the confusing apparent magnitude scale which goes backwards [i.e., less NEGATIVE the brighter], will be ~ ‘-12.xx’. The maximum brightness of the full moon is -12.92; the average -12.74.

A real picture of the Moon orbiting the Earth taken by NASA robotic spacecraft ‘Deep Impact’, in 2005, from 30 million miles away.

 

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