1.
critical moment, crucial juncture, moment of truth
A decisive point where the outcome depends on one's effort and resolve. Originally a kabuki and jōruri theater term for the most important scene requiring the actor's full concentration.
Usage
Typically used with だ, を迎える (to face), or に立つ (to stand at). Implies a period requiring concentrated effort rather than a single instant. Common in business, sports, and academic contexts.
Etymology
From 正念 (right mindfulness, a Buddhist concept) + 場 (scene, place). Originally referred to the climactic scene in kabuki where the lead actor must display their full skill.