Questions tagged [solstice]

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Do we get shortest shadow of any object at Solstice time or Meridian time?

Today is 21 June and I want to see at what time I will see shortest shadow in my location. I am seeing two different times: Solstice time a d Meridian time. I read that on summer solstice the sun is ...
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6 votes
1 answer

When exactly was the last time that Earth's aphelion coincided (within 24 hours) with the northern winter (December) solstice?

I would like to know in what year precisely did Earth's aphelion coincide (within 24 hours) with the northern winter (December) solstice? From what I understand, the day (on any tropical calendar) on ...
  • 63
4 votes
1 answer

Confusion when calculating the length of the day

I'm trying to solve this task: Tula and Moscow are located on the same meridian. In which city length of the day is bigger on 22 of June? 22 of December? I was thinking like that: we need to ...
  • 1,017
11 votes
3 answers

Why is today the shortest day but the solstice is actually tomorrow?

Here in Ashland, Oregon, today (Dec 20, 2020) is the shortest day length of the year at 9:05:45. But the winter solstice isn't until 2:02 AM PST tomorrow (Dec 21, 2020). Tomorrow's day length is a ...
  • 229
4 votes
2 answers

Will I be able to see both Jupiter and Saturn at the same time in my Astromaster 114?

I have a Celestron Astromaster 114 Newtonian reflector telescope. The specs: aperture: 114mm focal length: 1000mm focal ratio: f/8.77 I also have a t-ring so I can connect a Nikon camera to it. Will ...
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5 votes
1 answer

Are the Jupiter-Saturn conjunctions and winter solstice related?

There is conjunction of Jupiter and Saturn on Dec 21. And there is another celestial event on that day the winter solstice. So I'm just wondering that are these two events are related or not?
  • 119
6 votes
4 answers

Aligning the equinoxes to the cardinal points on a circular calendar

I want to draw a calendar as a circle, with the equinoxes at the top and bottom, and the solstices at the left and right. I am prepared to accept a little inaccuracy by having exactly 365 or 366 days ...
  • 163
6 votes
1 answer

When was the last time a great conjunction coincided with a solstice?

This December, a great conjunction will occur nine hours after winter solstice, which means that for much of the world the two events will be on the same day. When was the last time a great ...
  • 161
19 votes
2 answers

What will the PRECISE time of the Summer Solstice 2020 be?

I'm trying to explain to my daughter that the Summer Solstice is not a day of the year, but an exact instant in time. My search shows that this will be about 21:43 or 21:44 UTC tonight. To make my ...
1 vote
1 answer

Earth's perihelion vs winter solstice [duplicate]

I found that Earth's perihelion occurs roughly two weeks after winter solstice similar thing happens for summer solstice and aphelion. I understand what those terms mean but I don't understand the ...
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4 votes
1 answer

Aphelion and the solstice

We have just passed one of the solstices and are approaching aphelion. The two events are close but not simultaneous. There is no very obvious (to me) reason why the two should coincide or be close. ...
  • 339
3 votes
0 answers

How to calculate planetary positions hundreds or thousands of years ago

Wondering how to calculate the following in a general way: Sunrise/sunset Equinoxes/solstices Moon phases Planetary positions For hundreds to thousands of years ago. Wondering what the calculation ...
1 vote
1 answer

Date of solstices pre-0 AD

I’ve written a script based on Meeus’s Astronomical Algorithms to calculate the position of the sun, moon etc. up to about 4000 BC. Everything looks good, except when I go to 4000 BC the solstice are ...
2 votes
4 answers

Why is the equinoxes only 2 days and not more?

The earth is tilted at 23.5 degrees which means that in the solstices the north/south hemisphere is more radiated by the sun and the tilt to the sun is maximum. In the equinoxes, the tilt is not ...
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2 votes
1 answer

Solar azimuth for celtic fire festivals

I am pretty new to astronomy, and I have fallen down rabbit hole creating a new Metonic calendar in Javascript. As part of this I would like to calculate when the sun is half way between a solstice ...
10 votes
2 answers

Why is the time between equinoxes different?

The path of the Earth around the sun is described as being an ellipse, with the Sun being at one of the foci of the ellipse. Since an ellipse, by definition, is symmetrical with respect to the foci, I ...