The Spring Equinox Is Here. What Does That Mean?

Spring is almost here — officially, at least.

The vernal equinox arrives on Tuesday, marking the start of the spring season for the Northern Hemisphere.

But what does that actually mean? Here’s what to know about how we split up the year using the Earth’s orbit.What is the equinox?
[time-brightcove not-tgx=”true”]

As the Earth travels around the sun, it does so at an angle.

For most of the year, the Earth’s axis is tilted either toward or away from the sun. That means the sun’s warmth and light fall unequally on the northern and southern halves of the planet.

During the equinox, the Earth’s axis and its orbit line up so that both hemispheres get an equal amount of sunlight.

The word equinox comes from two Latin words meaning equal and night. That’s because on the equinox, day and night last almost the same amount of time — though one may get a few extra minutes, depending on where you are on the planet.

The Northern Hemisphere’s spring — or vernal — equinox can land between March 19 and 21, depending on the year. Its fall – or autumnal — equinox can land between Sept. 21 and 24.What is the solstice?

The solstices mark the times during the year when the Earth is at its most extreme tilt toward or away from the sun. This means the hemispheres are getting very different amounts of sunlight — and days and nights are at their most unequal.

During th...

Source: TIME: Science - March 18, 2024 Category: Science Authors: Associated Press Tags: Uncategorized WEF2024 Source Type: news