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You might use a device that has the option of automatically transitioning to dark mode.
Our word equinox is derived from the Latin equus meaning “equal,” and nox meaning “night.”
On the day of the Equinox, daylight and darkness are equal.
Two days of equinox occur on each planet in our solar system (except Mercury).
In late March and late September, we arrive at Earth's vernal equinox and autumnal equinox respectively in our Northern hemisphere, the order of which is flipped for those in our Southern hemisphere.
Intihuatana, carved into the bedrock at Machu Picchu, is known as huaca meaning “sacred,” and as hitching post of the Sun.
Intihuatana casts no shadow at midday on the equinoxes.
If you're standing near the stone you're able to orient yourself so that its angles and shadows align perfectly with the site's iconic mountain, which it overlooks.
Elsewhere in Peru at Chankillo, there is an ancient solar observatory which is aligned to a row of 13 stones, and on the equinoxes, the sun rises from the center notch.
The temple of Kukulcan at Chichen Itza reveals an undulating snake descending the temple on the equinoxes.
Here's the temple of Kukulcan in 1892.
Here is a rainbow, a phenomenon wherein
light reveals its source code, which is always there.
If the day is sunny in your location, you can have an
IRL equinox experience
by performing the following demonstration at solar noon on the day of the March or September equinox.
First, know your latitude (a one- or two-digit number with several digits following a decimal point).
In this demonstration, n equals 90 minus your latitude.
Obtain a protractor. If your protractor guy is indisposed, involve the nascent Metaverse by using this image [03:23] on your handheld device.
With any straight item that you might drive into a flat portion of Earth, such as a chopstick or a pencil or a sturdy ruler, do so at n degrees — n being the number you calculated earlier by subtracting your latitude from 90, which orients the item at 90 degrees to our Sun.
Remember to perform this demonstration at midday.
If you perform this demonstration on one of earth's days of equinox you should see no shadow, because, on this day, our planet's axial tilt points neither towards nor away from our Sun.
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