Why the Northern Hemisphere is about to have its earliest spring

This year’s vernal equinox, which marks the official start of spring in the Northern Hemisphere, will occur Thursday — the earliest spring equinox those north of the equator have seen in 124 years.
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Here's when spring 2024 starts and what the vernal equinox is

Spring equinox 2024: When is it? What is the vernal equinox?

In the Northern hemisphere, is the period between the spring equinox and autumn equinox longer than the period between the autumn and spring one, given the elliptical orbit of the Earth?

Spring Equinox 2024: When Is It, and What is It? - Farmers' Almanac - Plan Your Day. Grow Your Life.

Planetarium Newsletter - March 2020

If it is spring in the northern hemisphere and autumn in the southern hemisphere, where is it summer or winter? - Quora

What Is the Spring Equinox? Everything to Know About the Earliest First Day of Spring in 100 Years

First day of spring: The difference between meteorological and astronomical spring

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What the vernal equinox has to do with spring

First day of spring 2024: What to know about this year's vernal equinox

equinox – Watch the Skies

Northern hemisphere sees in early spring due to global warming, Spring