Every equinox, autumnal or vernal, the sun magically remembers that it is supposed to rise outside my window exactly behind the big fir tree.

Actually, there’s more to it than that, of course, but who cares when the day starts like this?

What happens during an equinox?

The September equinox occurs the moment the Sun crosses the celestial equator – the imaginary line in the sky above the Earth’s equator – from north to south. This happens either on September 22, 23, or 24 every year.