The exact moment of the equinox in September of this year is 12:20 pm Pacific Daylight Saving Time on September 22nd. At this time, the sun is directly above the equator and appears under the sky every day (due to the tilt of the earth and the orbit around the sun) until the solstice of December. The days are now changing in minutes!
In this episode of Super Science, Drew impersonates the Earth and demonstrates the importance of planetary tilting with Exploratorium Science educator Lori Lambertson.
“Inclinations are really important because that’s why our season is, and that’s why equinoxes and solstices are special days,” Lambertson explained.
The Earth is tilted 23.5 degrees around its axis, which affects the distribution of solar energy across the surface of the planet.
The equinox day length for September will be 12 hours and 8 minutes in San Francisco. The day we experience Equilax (the same amount of sunlight as at night) is September 25, when the sun rises at 7 am and sets at 7 pm.
“Without this slope, there would be no season,” Lambertson adds. “Seasons are caused by tilt, not by fluctuations in the distance between the Earth and the Sun.”
visit here For more information on the Exploratorium.
go here To plan your visit. A mask is required indoors. Hand washing and disinfection stations are located throughout the museum.
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Here’s why the earth’s tilt makes the September equinox possible Source link Here’s why the earth’s tilt makes the September equinox possible