Equinox is Here Again!

Are we there yet? We are indeed - but you wouldn't know it, in Oklahoma. It'll be many more weeks before the leaves begin to turn colour and fall, or before temperatures start to tumble too. Yet, officially we are here...

“But when fall comes, kicking summer out on its treacherous ass as it always does one day sometime after the midpoint of September, it stays awhile like an old friend that you have missed. It settles in the way an old friend will settle into your favorite chair and take out his pipe and light it and then fill the afternoon with stories of places he has been and things he has done since last he saw you.”
― Stephen King, 'Salem's Lot

Here's an autumnal equinox-related oddity I hadn't not come across before - from the ancient Roman world:

Equinox and medical theory

The Aëtius parapegma is an almanac that appears as a chapter in the 6th-century Tetrabiblos of Aëtius of Amida. It treats the rising and setting of constellations, weather forecasting, and medical advice as closely intertwined, and notes of the equinox (placed on September 25) that -

There is the greatest disturbance in the air for three days previous. Thus it is necessary to be careful neither to phlebotomize, nor purge, nor otherwise to change the body violently from the 15th of September through the 24th.

The passage is presented as advice for physicians, based on the principle that "the bodies of healthy people, and especially those of sick people, change with the condition of the air".

So, blood-letting and purging are not recommended. Alrighty then!