Happy Summer Solstice! Today is the longest day of the year in the Northern Hemisphere. …
Happy Summer Solstice! Today is the longest day of the year in the Northern Hemisphere. For millennia, people have used the solstices to keep track of the passage of time. Stonehenge is one of many examples of calendars aligned to the solstice sunrise. https://longnow.org/ideas/how-to-tell-time-using-stonehenge/ Photos from The Long Now Foundation’s post