The thirteenth 節気 “sekki” division of the traditional Japanese calendar is:
白露
(はくろ)
“hakuro”
‘glistening dew’ // ‘white dew’ (solar term)
The final “kō” microseason within this division is:
玄鳥去
(つばめ さる)
“tsubame saru”
Swallows leave
That makes 玄鳥去 the forty-fifth microseason of the year!
It typically lasts 18~22 September.
Click here to learn more about this subseries
Image credit: Cherry Orchard Nature Reserve.