Live data from Hacker News

The ancient monuments saluting the winter solstice

bbc.com

41–50 of 104 posts

Re: The ancient monuments saluting the winter solstice

#41

When an aperture is aligned to the winter solstice, it is also aligned to avoid light the rest of the year. An early attempt at air conditioning? Keep the heat out. We jump so quickly to religious significance.

> When an aperture is aligned to the winter solstice, it is also aligned to avoid light the rest of the year. An early attempt at air conditioning?

In the northern latitudes, doubtful. It would be cool enough year round.

Re: The ancient monuments saluting the winter solstice

#42
post #8
post #6

my modern equivalent(I needed last year for surfing (after i needed to cut a surf trip short as it became night)) https://daylight.franzai.com/

and yes, the maths fails when you are super super high north or south

You should try to address the latitude issue. (Says the guy who has only to spend a few seconds typing that.)

Re: The ancient monuments saluting the winter solstice

#43
post #27

How did ancient cultures know when the solstice was? If you didn't tell me it was the 21st, I don't know how I'd be able to tell you other than by carefully measuring the sunrise and sunset times

1. Go out every morning to work in your field. 2. When the Sun rises, make a note on the same fixed piece of wood, e.g., a fence. 3. Observe the leftmost and rightmost positions, these are your solstices. 4 You can now use your fence to identify and predict solstices.

I have read that the auspicious date of December 25th may have been intended to be the Solstice but that the degree of error for "making a note on a fence" is why we have the 25th.

Merry Sun-Fence Day everyone. ;-)

Re: The ancient monuments saluting the winter solstice

#44
post #7

How did ancient cultures know when the solstice was? If you didn't tell me it was the 21st, I don't know how I'd be able to tell you other than by carefully measuring the sunrise and sunset times

Probably easier to measure the location of sunsets and sunrises rather than the time? Edit: Obviously somewhere like here in Scotland observing the sunrise is easier said than done - particularly at this time of year!

Just need to be lucky one year.

Re: The ancient monuments saluting the winter solstice

#45

Where I live, I find it wild that there is a 5.75-hour difference between the summer and winter solstices, nearly a quarter of a whole day.

Where I live, the difference is almost six months!

Compiler-brain.

Re: The ancient monuments saluting the winter solstice

#46
What I find cute is that every year on the 21st of december a small number of modern day pagans and nature lovers gather at Ales Stenar here in southern Sweden and watch the sun rise over the center stone of the "ship".

We bring thermos bottles, some bring kids, pets, and we just stand there in silence watching the sun.

Afaik it's not coordinated, it's just a bunch of people having the same idea every year.

Re: The ancient monuments saluting the winter solstice

#47
post #2

[flagged]

> Blatant Western-centrism within academia (and the strange, almost primitive-hatred for living ancient-cultures) perhaps hasn't led either to the recognition of "ancient" monuments in India or its scientific/astronomical outputs. Enough with this bullshit please? There are genuine reasons why the knowledge of the calculus of ancient Kerala didn't travel outside India during the late middle ages. It is a fact that Ma…

We probably move in similar circles because not everyone will be familiar with Prof Divakaran's passing.

Re: The ancient monuments saluting the winter solstice

#48

When an aperture is aligned to the winter solstice, it is also aligned to avoid light the rest of the year. An early attempt at air conditioning? Keep the heat out. We jump so quickly to religious significance.

In Scandinavia we have no heat to anor condition out.

Re: The ancient monuments saluting the winter solstice

#49
post #6

my modern equivalent(I needed last year for surfing (after i needed to cut a surf trip short as it became night)) https://daylight.franzai.com/

For a modern equivalent, the first thing that came to my mind was Manhattanhenge:

https://en.wikipedia.org/wiki/Manhattanhenge

Post reply on HN