Equinox - Wikipedia
WEBAn equinox is when the Sun crosses the Earth's equator and day and night are of equal length. The vernal equinox is the March equinox in the Northern Hemisphere and the September equinox in the Southern Hemisphere.
Equinox - National Geographic Society
WEBOct 19, 2023 · An equinox is when the sun is directly above the Equator, creating equal day and night on Earth. Learn about the science, history, and culture of the equinoxes, and how they affect different regions and planets.
What Is the Equinox? And What Is the Solstice? - timeanddate.com
WEBLearn how Earth's tilt and orbit around the Sun cause equinoxes and solstices, the two moments each year when day and night are equal or longest. Find out when and where they occur, and how they differ from seasonal changes on other planets.
March equinox 2025: All you need to know - EarthSky
WEBThe March equinox marks the sun’s crossing above Earth’s equator, moving from south to north. Learn about the seasonal effects, the sunrise and sunset phenomena, and the celestial and...
What is an Equinox? | National Geographic - YouTube
WEBLearn what equinoxes are and how they affect the seasons and daylight on Earth and other planets. Watch this video from National Geographic to discover the causes and examples of these...
What is an equinox? | Space
WEBMar 19, 2024 · An equinox is when day and night are almost the same length in both hemispheres, caused by the Earth's tilt and orbit around the sun. Learn about the dates, causes, history and cultural...
Equinox | Definition, Dates, & Facts | Britannica
WEBAug 23, 2024 · An equinox is when the Sun is exactly above the Equator and day and night are of equal length. Learn about the two equinoxes in the year, their dates, and how they relate to the seasons and the celestial sphere.
Who, What, Why: What is an equinox? - BBC News
WEBSep 23, 2015 · The equinox is being celebrated around the world - heralding autumn in the northern hemisphere and spring in the south. What is an equinox and how does it work, asks Justin Parkinson.
Equinox – Definition, Facts, Dates - Science Notes and Projects
WEBSep 4, 2024 · An equinox occurs when the Earth’s equator aligns with the Sun, making the Sun appear directly overhead at the equator. On the equinox, the Sun rises due east at the equator, and sets due west. This alignment results in nearly equal daylight and darkness across the globe.
Why the equinox ushers in the arrival of spring - National …
WEBMar 15, 2024 · Equinoxes are when the sun is directly above Earth's equator, giving us equal day and night. Learn how they happen, why they mark the start of spring or fall, and how ancient and modern...