Everything you need to know: Vernal equinox 2015
Astronomy Essentials | EarthSky
The March equinox signals the beginning of spring in the Northern Hemisphere and autumn in the Southern Hemisphere. It marks that special moment when the sun crosses the celestial equator going from south to north. In 2015, this equinox arrives on March 20 at 22:45 UTC, or 5:45 p.m. Central Daylight Time.
Here’s what we in the Northern Hemisphere know about this equinox. Our sunrise is earlier now, and nightfall comes later. Plants are sprouting. Winds are softening. For us in the Northern Hemisphere, people are enjoying the warmer days of spring. Meanwhile, south of the equator, autumn begins. There is also a total eclipse of the sun at this 2015 March equinox. Follow the links below to learn more about the vernal equinox.