March equinox 2025: All you need to know - EarthSky
WEBThe March equinox – aka the vernal equinox – marks the sun’s crossing above Earth’s equator, moving from south to north. Earth’s tilt on its axis is what causes this northward shift of the...
Vernal equinox | Definition, Dates, & Facts | Britannica
WEBJul 23, 2024 · vernal equinox, two moments in the year when the Sun is exactly above the Equator and day and night are of equal length; also, either of the two points in the sky where the ecliptic (the Sun’s annual pathway) and the celestial equator intersect.
Equinox | Definition, Dates, & Facts | Britannica
WEBAug 23, 2024 · The vernal equinox, marking the beginning of spring in the Northern Hemisphere, occurs about March 21, when the Sun moves north across the celestial equator. The autumnal equinox falls about September 23, as the Sun crosses the celestial equator going south.
March equinox - Wikipedia
WEBThe March equinox is known as the vernal equinox (spring equinox) in the Northern Hemisphere and as the autumnal equinox (autumn equinox or fall equinox) in the Southern Hemisphere. [ 8 ] [ 7 ] [ 10 ]
What Is the Vernal Equinox? - Wonderopolis
WEBThe March equinox marks when the Northern Hemisphere starts to tilt toward the sun, which means longer, sunnier days. In the Northern Hemisphere, the March equinox is called the vernal equinox, because it signals the beginning of …
Equinox - National Geographic Society
WEBOct 19, 2023 · The March equinox is the vernal equinox in the Northern Hemisphere, and the autumnal equinox in the Southern. The September equinox is the autumnal equinox in the Northern Hemisphere and the vernal in the Southern. The Science of the Equinoxes. During the equinoxes, solar declination is 0°.
Vernal Equinox | COSMOS - Swinburne
WEBThe vernal equinox is also known as the First Point of Aries, since about 2,000 years ago, the point on the celestial sphere where the ecliptic and celestial equator crossed was in the constellation Aries. However, due to the precession of the equinoxes, the vernal equinox now occurs in Pisces.
Vernal Equinox -- from Eric Weisstein's World of Astronomy
WEBIn the southern hemisphere, the vernal equinox corresponds to the center of the Sun crossing the celestial equator moving southward and occurs on the date of the northern autumnal equinox. The vernal equinox marks the first day of the season of spring.
Vernal equinox 2023 brings spring to the Northern Hemisphere
WEBVernal equinox 2023 brings spring to the Northern Hemisphere with a not-so-equal timing twist. On the equinox date in March, the length of daylight is actually longer than darkness by several...
The Sky This Week from March 19 to 26 - Astronomy Magazine
WEBMar 19, 2021 · Saturday, March 20. The vernal equinox occurs at 5:37 A.M. EDT this morning. On the equinox, the Sun sits exactly above Earth’s equator; this date also marks the beginning of spring in the...