12 hours of light and 12 hours of darkness

I appreciate the autumnal equinox was yesterday, I just ran out of time.

This geochron clock hangs in my bosses office, it's fascinating.

As we now have relatives in Adelaide I was trying to explain to my youngest son why Australia has three separate time zones and Adelaide is only 8 and a half hours ahead of us, I photographed the clock for him as it helps make things clearer.