In this category you will find motifs with the primary seasonality of summer, which is both a long period (approximately three months) and varies in its start and duration throughout the world.
Summer is defined astronomically by the period between the Summer solstice and the autumnal equinox. In the Northern hemisphere summer falls roughly from June 22nd through September 23rd and in the Southern hemisphere from December 23rd through March 29th.
The traditional Japanese lunisolar calendar defines summer as as the fourth through sixth months (originally roughly corresponding to May 7th through August 8th). The integration of the lunisolar calendar with the Gregorian calendar has caused the months to shift "backwards" to correspond with April through June.