Indoor, Outdoor & Kids' Trampolines

When is the Spring Equinox (2020)?


When is the spring equinox in 2020? The spring equinox in 2020 occurs on Thursday,
March 19 at 8:49 pm Pacific (11:49 pm Eastern). The word “equinox” comes from Latin, meaning
“equal night”, and at this time day and night are nearly equal in length. Equinoxes and solstices are all about the
tilt of the Earth’s rotation axis relative to its orbit around the Sun. If the Earth’s axis were straight up and down,
there would be no seasons. But the Earth’s axis is tilted at 23.5° away
from vertical, and when we orbit the Sun, our axis stays pointed in the same direction,
roughly towards the North Star. Looking at the northern hemisphere, when the
Earth’s axis points directly away from the Sun, it is the winter solstice, and the Sun
appears lowest in the sky. When the Earth’s axis points directly toward
the Sun, it’s the summer solstice, and the Sun appears highest in the sky. Between these two solstices are the two equinoxes,
when the Earth’s axis is exactly perpendicular to an imaginary line drawn between the Earth
and Sun. On both equinoxes, the sun rises due east and sets due west, no matter where you are on the earth. Let’s go to the Giovale Open Deck Observatory
here at Lowell Observatory to see how this looks from the ground. The observing plaza is bordered by six markers
that are aligned to the points on the horizon where the Sun rises and sets on the summer
solstice, the winter solstice and the two equinoxes. (It’s like a modern-day Stonehenge.) On the morning of the spring equinox, you
can watch the Sun rise due east. [music] On the evening of the spring equinox, you
can watch the Sun set due west. Join Lowell Observatory this Thursday evening
for a live stream of our Spring Equinox Celebration.

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