just then; at that time; at that moment
Written or somewhat formal expression used to mark the timing of an event, often when something happens just at that moment or in those circumstances.
I arrived at the station. Just then, heavy rain began to fall.
Around the time the meeting was about to begin, a power outage occurred.
as it is a time of ...; in this season of ...
Formulaic, letter-style use introducing the season or circumstances, typically before a polite wish or greeting.
As this is a season of severe cold, please take good care of yourself.
In this time of intense heat, I sincerely wish everyone good health.
時節柄 and the letter-writing sense of 折から both mean "given the season/circumstances" and introduce a polite remark in formal correspondence.
その時 is the plain, everyday way to say "at that time," while 折から is a formal, literary equivalent used in written narration.
Standard mixed kanji-kana spelling; this is the high-priority form.
Kanji-only variant. It is more visually formal and less learner-friendly than 折から.
Attested irregular okurigana variant; prefer 折から in ordinary writing.
Probably formed from 折, meaning an occasion or time, plus から. The spelling 折柄 uses 柄 to evoke circumstances or occasion; the exact historical development is uncertain.