Its entrance faces the rising sun on the day of the summer solstice, which had 18th-century scholars inferring that ancient astronomers might have used it as a type of solar calendar to track sun ...

Earth's oceans and atmosphere act like heat sinks, absorbing and reradiating the sun's rays over time. Even though the planet absorbs a lot of sunlight on the summer solstice, it takes several ...

June 20 at 10:42 p.m. What is the summer solstice? The Old Farmer's Almanac explains that the June solstice occurs when the sun travels along its northernmost path in the sky. In the Northern ...

An equinox happens when the sun's rays are directly over the equator, resulting in approximately equal hours of daylight and darkness worldwide. The summer solstice, the longest day of the year ...