September.

“Outside the leaves on the trees constricted slightly; they were the deep done green of the beginning of autumn. It was a Sunday in September. There would only be four. The clouds were high and the swallows would be here for another month or so before they left for the south before they returned again next summer.” ― Ali Smith, The Whole Story and Other Stories

“The seasonal urge is strong in poets. Milton wrote chiefly in winter. Keats looked for spring to wake him up (as it did in the miraculous months of April and May, 1819). Burns chose autumn. Longfellow liked the month of September. Shelley flourished in the hot months. Some poets, like Wordsworth, have gone outdoors to work. Others, like Auden, keep to the curtained room. Schiller needed the smell of rotten apples about him to make a poem. Tennyson and Walter de la Mare had to smoke. Auden drinks lots of tea, Spender coffee; Hart Crane drank alcohol. Pope, Byron, and William Morris were creative late at night. And so it goes.” ― Helen Bevington, When Found, Make a Verse of