Literary or poetic term for the end of spring, roughly corresponding to the third month of the lunar calendar. In modern usage, it may appear in haiku or classical contexts.
third month of the lunar calendar
Obsolete term for the third month of the traditional lunar calendar. Now only encountered in historical or classical contexts.
In this late spring season, I hope you are all doing well.
In the old lunar calendar, 季春 referred to the third month.