Posted on 06/21/2026 11:21:29 AM PDT by MtnClimber
Explanation: What if you could see the entire sky -- all at once -- for an entire year? That, very nearly, is what is pictured here. Every 15 seconds during 2025, an all-sky camera took an image of the sky over the Netherlands. Central columns from these images were then aligned and combined to create the featured keogram, with January at the top, December at the bottom, and the middle of the night running vertically just left of center. What do we see? Most obviously, the daytime sky is mostly blue, while the nighttime sky is mostly black. The twelve light bands crossing the night sky are caused by the glow of the Moon. The thinnest part of the black hourglass shape occurs during the summer solstice, like today, when days are the longest, while the thickest part occurs at the winter solstice. Equinoxes can also be located in the keogram, for example the northern-spring equinox from one year ago is about three-quarters of the way up.
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For more detail go to the link and click on the image for a high definition image. You can then move the magnifying glass cursor then click to zoom in and click again to zoom out. When zoomed in you can scan by moving the side bars on the bottom and right side of the image.
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Is that a solar eclipse in the Spring (upper rightish portion, thin black line?
Same question
The length of the black line is over an hour long so certainly not a total solar eclipse. But interestingly enough in March 2025 (on March 29th) there was a partial solar eclipse visible from the Netherlands, but I doubt it would cause the line to go black. The eclipse occurred pretty close in time to where the line appears though! Maybe??!! Very odd coincidence!
Like sand through an hour glass, so are the days of our life.
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