In S England, there always seems to be a date when it can be said
"autumn has arrived". This date varies from one year to the next of
course, but by remarkably little. (a week perhaps?). The onset of
Autumn, unlike other seasons, always seems clearly defined.

In 2004 it can probably be said that Autumn began on 10 September -
bang down the middle of the range of dates as well as I can remember.

Any comments?

Jack