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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When it is spring in the northern hemisphere, what season is it in the southern hemisphere? - Quora

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?

Why does the sun set later in the Southern USA than it does in the Northern USA? - Quora

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Meteorologist Aaron Morrison - Party like it's 1896? Spring officially begins this evening at 7:06PM AKDT as the sun crosses the celestial equator. It'll be the earliest spring the Northern Hemisphere has