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www.express.co.uk/news/science/1171486

Equinox 2019 date: When is the Autumn Equinox? What is the meaning of the equinox? THE Autumn Equinox is rapidly approaching as the last days of summer slowly come to an end – but when is the ...

en.wikipedia.org/wiki/Equinox

Day is usually defined as the period when sunlight reaches the ground in the absence of local obstacles. [citation needed] On the date of the equinox, the center of the Sun spends a roughly equal amount of time above and below the horizon at every location on the Earth, so night and day are about the same length.Sunrise and sunset can be defined in several ways, but a widespread definition is ...

moonhoroscope.com/solstice-winter-summer-and-equinox-spring-autumn-2019

The equinox and solstice day 2019 The spring and autumn equinox is an astronomical phenomenon, in which the day is equal to the night, they mark the change of the seasons. We know that the spring and autumn equinox comes at a time when our Sun in its yearly movement through the ecliptic crosses the celestial equator.

nypost.com/2019/09/20/fall-equinox-2019-when-is-the-first-day-of-fall

The fall equinox is Monday Sept. 23 Nope, it’s neither the 20th or the 21st. Specifically, the 2019 equinox will begin at 3:50 a.m Eastern Standard Time on the 23rd.

www.timeanddate.com/calendar/seasons.html

The June solstice is the longest day of the year in the Northern Hemisphere & the shortest day in the Southern Hemisphere. September Equinox The Sun shines directly on the Equator on the September equinox and the length of day and night is nearly equal, but not quite.

www.drikpanchang.com/seasons/season-autumnal-equinox-timings.html?year=2019

This page provides date and time for Autumnal Equinox in the year 2019 for New Delhi, NCT, India. It also lists astronomical sunrise and sunset timings on Autumnal Equinox day. This page gives the day length in hours, minutes and seconds on Equinox day, including previous and next day.

www.timeanddate.com/calendar/march-equinox.html

March Equinox - Equal Day and Night, Nearly. By Vigdis Hocken and Aparna Kher. There are two equinoxes every year, in March and September, when the Sun shines directly on the equator, and the length of night and day are nearly equal.

www.weather.gov/media/ind/seasons.pdf

vernal equinox.....(spring) mar 20 2019 558 pm edt - 2158 utc SUMMER SOLSTICE....(SUMMER) JUN 21 2019 1154 AM EDT - 1554 UTC AUTUMNAL EQUINOX...(FALL) SEP 23 2019 350 AM EDT - 0750 UTC

www.calendarpedia.com/when-is/spring-equinox.html

Spring equinox is another name for the equinox also known as vernal equinox and March equinox.An equinox is the moment in time (not a day-long event) when the Sun stands directly above the equator and day and night are of approximately equal length.

www.timeanddate.com/calendar/spring-equinox.html

In the Northern Hemisphere, the Vernal (Spring) Equinox marks the first day of astronomical spring. There's also another, more common definition of when the seasons start, namely meteorological definitions, which are based on average temperatures rather that astronomical events.