In this category you will find motifs with the primary seasonality of autumn, which is both a long period (approximately three months) and varies in its start and duration throughout the world.
Autumn is defined astronomically by the period between the autumnal equinox and the Winter solstice. In the Northern hemisphere autumn falls roughly from September 23rd through December 22nd and in the Southern hemisphere from March 30th through June 20th.
The traditional Japanese lunisolar calendar defines summer as as the seventh through ninth months (originally roughly corresponding to August 9th through November 7th). The integration of the lunisolar calendar with the Gregorian calendar has caused the months to shift "backwards" to correspond with July through September.