This afternoon, at 2.31 pm, the Sun crosses the celestial equator (or the imaginary line in the sky above the Earth's Equator) from South to North and the Autumn Equinox will occur. At that particular point, days and nights are of equal length, a moment of balance between light and dark, a threshold between two seasons.

As I write this, the scene on our patch of Welsh countryside is typical of Mabon time. Looking out, the landscape is still mainly green with only a few dots of autumnal yellows and oranges here and there and the blue sky continues the …