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March 20, 2025
- The sun crosses the celestial equator – a line directly above Earth’s equator – at 9:02 UTC on March 20, 2025 (4:02 p.m. CDT).
earthsky.org/astronomy-essentials/everything-you-need-to-know-vernal-or-spring-equinox/
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The sun crosses the celestial equator – a line directly above Earth’s equator – at 9:02 UTC on March 20, 2025 (4:02 p.m. CDT).
There are only two moments each year when neither pole points toward the Sun, and the Sun lies directly above Earth’s equator. These moments are the equinoxes. The March equinox happens sometime between March 19 and 21. The September equinox occurs sometime between September 21 and 24.
A solar equinox is a moment in time when the Sun crosses the Earth's equator, which is to say, appears directly above the equator, rather than north or south of the equator. On the day of the equinox, the Sun appears to rise "due east" and set "due west".
At an equinox, the sun appears directly above Earth’s equator. At the September equinox, the sun is moving from north to south as it crosses above the equator.
The September equinox is the moment the Sun crosses the celestial equator—an imaginary line in the sky above Earth’s equator—from north to south. This happens on September 22, 23, or 24 in most years.
Sep 18, 2024 · The equinox sun is on the celestial equator. Which means, no matter where you are on Earth, the celestial equator intersects your horizon at due east and due west.
Oct 19, 2023 · During an equinox, the sun is aligned directly behind satellites in geostationary orbit at the Equator. Situated directly above the subsolar point, the satellites are flooded with direct solar radiation .
