noun
end of winter
Obsolete term for the last part of winter, used in classical or poetic contexts.
季冬の候、いかがお過ごしでしょうか。
How are you faring in this late winter season?
noun
twelfth month of the lunar calendar
Refers to the last month of the traditional lunar year, roughly corresponding to January in the modern calendar. Used in historical or almanac contexts.
旧暦では、季冬は十二月を指す。
In the old lunar calendar, 季冬 refers to the twelfth month.