crisis point

climax crisis critical juncture critical point critical stage crossroads crucial moment crunch time decisive moment defining moment do or die time emergency high noon irreversible momentum moment of truth pivotal point point of no return sink or swim time the Rubicon turning point zero hour

A-day D-day H-hour appointed hour climax contingency countdown crisis crossroad crossroads crunch time deadline emergency exigency jumping-off point juncture moment of truth pinch pivotal moment start time strait target target day the time turning point vital moment