A fast look on the thermometer in a lot of america might say summer time, however the calendar says in any other case, particularly that summer time is coming to an finish on Thursday.
Certainly, the primary day of autumn shouldn’t be solely simply across the nook, however, in america, the autumnal equinox is tomorrow, September 22, at 9:03 p.m. EDT (8 p.m. CT, 7 p.m. MT, and 6 p.m. PDT).
Within the European Union, the autumnal equinox takes place on Friday, September 23, at 3:03 a.m. Central European Time.
The seasons change on the day of the autumnal equinox, the second of two equinoxes every year.
What precisely is an equinox and what does it signify?
Annually, the planet Earth goes by way of two equinoxes and two solstices. The equinoxes happen in September and March, marking the beginning of fall and spring, respectively. The soltices happen in June and December, marking the beginning of summer time and winter.
Confused? So had been we, till we consulted final yr with the specialists on the Nationwide Aeronautics and Area Administration, identified extra popularly as NASA.
“An equinox happens halfway between the 2 solstices when the times and nights are the least equal,” was NASA’s reply.
The autumnal equinox additionally marks the purpose at which darkness will begin to be extra prevalent than daylight. Because the summer time solstice in June, the hours of daylight have been rising shorter and, on the day of the autumnal equinox, day and night time are roughly equal in length.
Certainly, the time period “equinox” is a portmanteau combining the Latin phrase “aequus,” which implies “equal,” and “nox,” which implies “night time.”
The times will proceed to develop shorter and the nights will proceed to develop longer till the winter solstice, which can happen on December 21. The winter solstice happens when one of many Earth’s poles has its most tilt away from the Solar.
(Picture: Accura Media Group)