Geek's Number Talk: The Equinox Cometh
/The fall — or autumnal — equinox arrives in the Northern Hemisphere at precisely 12:20pm PDT today, September 22. But the celestial event occurs at the same moment worldwide, when the Sun crosses an imaginary extension of our equator as the Earth tilts on its axis.
So what are you doing during the lunch hour on Hump Day? Want to have an equinox party?